1 00:00:00,000 --> 00:00:11,046 2 00:00:11,046 --> 00:00:12,170 ZAMYLA Chan: Hey, kulħadd. 3 00:00:12,170 --> 00:00:13,560 Merħba għat-taqsima. 4 00:00:13,560 --> 00:00:17,320 Illum huwa biss se tkun kollha kwizz tirrevedi għall kwizz tiegħek nhar l-Erbgħa. 5 00:00:17,320 --> 00:00:20,060 Nispera li kulħadd jiftakar li dawn ikollhom kwizz nhar l-Erbgħa. 6 00:00:20,060 --> 00:00:22,560 U jekk inti ma, ukoll, issa inti ħadthom ġiet imfakkra. 7 00:00:22,560 --> 00:00:26,486 Allura l-Erbgħa tagħmel żgur li int juru up għal klassi jew akkomodazzjonijiet oħra kif 8 00:00:26,486 --> 00:00:26,985 meħtieġ. 9 00:00:26,985 --> 00:00:27,845 10 00:00:27,845 --> 00:00:29,220 Inti guys huma ser jkunu tal-biża. 11 00:00:29,220 --> 00:00:30,440 Li għaddej biex jkun kbir. 12 00:00:30,440 --> 00:00:34,910 U jien se tagħmel dak kollu li nista ' biex tgħin tipprepara lilek llum għall-kwizz tiegħek 13 00:00:34,910 --> 00:00:35,470 issa. 14 00:00:35,470 --> 00:00:39,960 U wkoll fil-każ li inti ma tafx, hemm sessjoni reviżjoni kors wiesgħa 15 00:00:39,960 --> 00:00:45,840 llum fil 07:00 fil Labs Majjistral B103 kamra. 16 00:00:45,840 --> 00:00:49,950 Tista 'tara lili darb'oħra għal encore bħala I se jwassal parti minn dak sessjoni reviżjoni 17 00:00:49,950 --> 00:00:50,510 ukoll. 18 00:00:50,510 --> 00:00:53,218 Hekk jekk inti ma tistax tinkiseb biżżejjed mill me issa, inti tista 'toħroġ mill-ġdid tonight. 19 00:00:53,218 --> 00:00:54,130 20 00:00:54,130 --> 00:00:56,060 >> Dritt, l-ewwel affarijiet kollha sabiex ewwel. 21 00:00:56,060 --> 00:00:59,630 Biss xi tips kwizz qabel we attwalment adsa fl għal reviżjonijiet. 22 00:00:59,630 --> 00:01:04,160 Allura kif ma 'kull eżami, il-prattika definittivament se jgħinuk out. 23 00:01:04,160 --> 00:01:09,260 Hemm eżamijiet mill-passat sitt jew seba 'snin fuq hemmhekk, 24 00:01:09,260 --> 00:01:12,480 hekk li l-lott ta 'prattika materjal għall inti guys li jkollhom. 25 00:01:12,480 --> 00:01:15,340 U fil-fatt, illum huwa verament ftit ser jkunu għaddejjin fuq kwalunkwe temi 26 00:01:15,340 --> 00:01:18,900 li inti guys jkollhom mistoqsijiet dwar kif ukoll kif taħdem permezz ta 'problemi prattiċi 27 00:01:18,900 --> 00:01:20,360 minn kwizz żero. 28 00:01:20,360 --> 00:01:22,690 So I ser tarmi up żero kwizz mill-aħħar sena hawn fuq, 29 00:01:22,690 --> 00:01:26,410 u nistgħu naħdmu permezz ta 'kwalunkwe problemi li inti guys tixtieq. 30 00:01:26,410 --> 00:01:27,370 >> Hekk prattikanti. 31 00:01:27,370 --> 00:01:29,310 Int ser tibda tagħmel li llum. 32 00:01:29,310 --> 00:01:30,230 Kodiċi fuq il-karta. 33 00:01:30,230 --> 00:01:32,970 Allura yeah, jekk kulħadd jistgħu attwalment toħroġ 34 00:01:32,970 --> 00:01:35,810 karta, li ser tkun kbira, għax int ma 35 00:01:35,810 --> 00:01:41,470 se jkollhom il-kompjuter tiegħek fuq l- eżami u l-kitba out kodiċi bl-idejn 36 00:01:41,470 --> 00:01:44,190 spiss hija ferm aktar diffiċli milli inti tista 'tistenna. 37 00:01:44,190 --> 00:01:46,680 Int użati biss iqisuh u tajping, 38 00:01:46,680 --> 00:01:49,630 u inti għandek kompilatur tiegħek biex jgħinuk out meta jkollok żbalji, 39 00:01:49,630 --> 00:01:52,190 imma inti ma tieħux li fuq l-eżami. 40 00:01:52,190 --> 00:01:55,140 Allura huwa verament importanti li attwalment tkun tista 'tikteb l-kodiċi, 41 00:01:55,140 --> 00:01:58,360 u li l-memorja tal-muskoli li jagħmlu dan bl-idejn se verament tgħinek. 42 00:01:58,360 --> 00:01:59,720 43 00:01:59,720 --> 00:02:01,690 >> Allura aħna qed jkollna qrib ftit. 44 00:02:01,690 --> 00:02:02,340 Huwa Tnejn. 45 00:02:02,340 --> 00:02:03,930 Eżami tiegħek huwa fuq l-Erbgħa. 46 00:02:03,930 --> 00:02:06,030 Imma jekk ikollok ħin, definittivament tieħu waħda 47 00:02:06,030 --> 00:02:10,199 mill-eżamijiet mis-sena li għaddiet jew l- sena qabel taħt il-limitazzjoni ta 'żmien 48 00:02:10,199 --> 00:02:11,660 ta 'siegħa u nofs. 49 00:02:11,660 --> 00:02:13,730 Just knock out siegħa u nofs ta 'żmien, 50 00:02:13,730 --> 00:02:17,480 u tiltaqa lilek innifsek isfel, u biss xogħol permezz tal-problemi 51 00:02:17,480 --> 00:02:19,962 bħal li kieku inti fil-fatt tieħdu, għaliex wieħed 52 00:02:19,962 --> 00:02:23,295 mill-affarijiet akbar li aħna tisma dwar l kwizzijiet hija li huma twal ħafna. 53 00:02:23,295 --> 00:02:24,900 54 00:02:24,900 --> 00:02:26,660 Huwa ħafna ta 'materjal. 55 00:02:26,660 --> 00:02:30,850 Hemm ħafna mistoqsijiet, u ħafna nies ma tistax finitura. 56 00:02:30,850 --> 00:02:34,660 Naf li jien totalment ma finitura kwizzijiet tiegħi meta I ħa l-klassi. 57 00:02:34,660 --> 00:02:37,180 >> Fuq din in-nota, bħala inqas taqsima komdu, 58 00:02:37,180 --> 00:02:40,570 jifhmu li dan il-kors huwa maħsub biex jilqgħu għal nies tal-livelli kollha. 59 00:02:40,570 --> 00:02:43,640 R-raġuni kollha għandna inti maqsuma inqas komdi, x'imkien bejn, 60 00:02:43,640 --> 00:02:47,660 u aktar komdu huwa li tip ta 'jagħmilha aktar ġust. 61 00:02:47,660 --> 00:02:51,699 U jekk inti huma inqas komdi, huwa mhux meħtieġ per se biex tikseb kollox. 62 00:02:51,699 --> 00:02:53,990 Simili jekk inti kienu jkollna kollox, inti probabilment 63 00:02:53,990 --> 00:02:55,448 tkun fis-sezzjoni aktar komda. 64 00:02:55,448 --> 00:03:00,160 Allura ovvjament ma taħbit infuskom up wisq iebes jekk inti ma tistax finitura l-eżami. 65 00:03:00,160 --> 00:03:01,920 Ħu mill me, I ma tagħmel dan. 66 00:03:01,920 --> 00:03:03,070 Jien xorta konċentratur. 67 00:03:03,070 --> 00:03:04,630 Jien xorta tgħin jgħallmu l-kors. 68 00:03:04,630 --> 00:03:06,170 Inti ser tkun multa. 69 00:03:06,170 --> 00:03:06,670 Kull dritt. 70 00:03:06,670 --> 00:03:08,740 U fl-aħħarnett, nikseb xi irqad. 71 00:03:08,740 --> 00:03:11,020 Ovvjament ma 'kull eżami aħna dejjem ngħid dan. 72 00:03:11,020 --> 00:03:13,610 Cramming l-lejl ta 'qabel u ma jkollna ebda irqad 73 00:03:13,610 --> 00:03:16,390 ma not-- forsi jekk dik jaħdem għalik, tmurx għaliha. 74 00:03:16,390 --> 00:03:18,790 Iżda għall-maġġoranza kbira tal- nies, jkollna xi irqad, 75 00:03:18,790 --> 00:03:22,390 kiri mistrieħ moħħ tiegħek u tirkupra qabel ma waslu fl għall-eżami 76 00:03:22,390 --> 00:03:23,480 se verament tgħinek. 77 00:03:23,480 --> 00:03:26,120 Ukoll se jkun hemm kważi żgur kandju fil-eżami, 78 00:03:26,120 --> 00:03:28,019 hekk ikollok biex ħerqa li. 79 00:03:28,019 --> 00:03:29,310 Inti guys huma se jagħmlu kbira. 80 00:03:29,310 --> 00:03:30,226 Li għaddej biex tkun multa. 81 00:03:30,226 --> 00:03:31,570 82 00:03:31,570 --> 00:03:36,190 U issa fil-siegħa li jmiss u nofs I se tipprova u prep inti bħala aħjar kemm nista '. 83 00:03:36,190 --> 00:03:41,260 >> So I jkollhom slides mill bażikament taqsimiet kollha sa issa. 84 00:03:41,260 --> 00:03:45,874 Jien mhux se jmorru permezz kull wieħed minnhom għaliex dik hija mhux 85 00:03:45,874 --> 00:03:49,040 fattibbli fl-siegħa u nofs kif ukoll kif taħdem permezz ta 'problemi prattika. 86 00:03:49,040 --> 00:03:51,410 Allura minflok I jkollhom lista ta 'suġġetti. 87 00:03:51,410 --> 00:03:55,160 Dawn huma l-affarijiet kollha li nistgħu kwizz inti fuq. 88 00:03:55,160 --> 00:03:56,950 89 00:03:56,950 --> 00:03:58,770 Jekk hemm xi ħaġa li verament jumps out 90 00:03:58,770 --> 00:04:02,140 li inti tixtieq li tmur fuq, li inti trid lili biex tmur fuq konċettwalment, 91 00:04:02,140 --> 00:04:04,320 I tista 'tipprova u jagħtu inti ħarsa ġenerali hemmhekk. 92 00:04:04,320 --> 00:04:07,690 Jew jekk inti tixtieq li jaqbżu dritt li tagħmel problemi prattika flimkien, 93 00:04:07,690 --> 00:04:08,420 nistgħu nagħmlu dan. 94 00:04:08,420 --> 00:04:09,330 Huwa sa inti guys. 95 00:04:09,330 --> 00:04:10,770 M'hemmx li ħafna minnkom. 96 00:04:10,770 --> 00:04:13,180 Allura huwa x'ikun inti guys tixtieq tagħmel. 97 00:04:13,180 --> 00:04:15,667 I tixtieq li tkun l-aktar utli lejn inti guys. 98 00:04:15,667 --> 00:04:16,827 99 00:04:16,827 --> 00:04:17,910 So I ser tavżak biss ħarsa. 100 00:04:17,910 --> 00:04:27,880 101 00:04:27,880 --> 00:04:30,500 >> UDJENZA: Ħaġa waħda hija il chart li aħna iżommu 102 00:04:30,500 --> 00:04:33,290 jgħidu dwar il-munzell u l-borġ. 103 00:04:33,290 --> 00:04:34,600 104 00:04:34,600 --> 00:04:37,434 Just l-idea kollha wara dak u dak li tfisser. 105 00:04:37,434 --> 00:04:38,350 ZAMYLA Chan: Yeah, OK. 106 00:04:38,350 --> 00:04:40,290 107 00:04:40,290 --> 00:04:43,216 Dan huwa l-mod kollha fl- aħħar, so let me iscroll permezz. 108 00:04:43,216 --> 00:04:45,490 >> UDJENZA: Aħna ma jkollhom biex do issa, iżda tkun xi tkun. 109 00:04:45,490 --> 00:04:47,070 110 00:04:47,070 --> 00:04:49,770 >> ZAMYLA Chan: Kien hemm anything-- dan wieħed. 111 00:04:49,770 --> 00:04:51,570 112 00:04:51,570 --> 00:04:53,555 Huwa dan it-tip ta 'fuzzy għall-persuni? 113 00:04:53,555 --> 00:04:54,390 114 00:04:54,390 --> 00:04:55,640 UDJENZA: Yeah, I tieni li. 115 00:04:55,640 --> 00:04:57,718 U nistgħu wkoll tagħmel buffer overflow? 116 00:04:57,718 --> 00:04:58,926 ZAMYLA Chan: overflow Riserva? 117 00:04:58,926 --> 00:04:59,820 OK. 118 00:04:59,820 --> 00:05:03,460 Allura buffer overflow hija pjuttost faċli biss biex jitkellmu dwar. 119 00:05:03,460 --> 00:05:08,217 Huwa bażikament buffers taħseb dwar xi memorja firxa li għandek, id-dritt? 120 00:05:08,217 --> 00:05:10,050 Aħna tipikament jitkellmu dwar overflow buffer meta 121 00:05:10,050 --> 00:05:15,160 int ma iċċekkjar kemm l-utent huwa tqegħid fil, id-dritt? 122 00:05:15,160 --> 00:05:18,540 U l-idea li jkun bil buffer overflow huwa 123 00:05:18,540 --> 00:05:21,535 huma tqegħid fil ferm data wisq għall-ispazju 124 00:05:21,535 --> 00:05:23,780 li inti stajt allokat għalihom, id-dritt? 125 00:05:23,780 --> 00:05:28,310 >> Mela jekk inti tgħidli, tagħti me xi messaġġ, aħna qed 126 00:05:28,310 --> 00:05:31,860 jekk wieħed jassumi li dawn qed tmur biex tagħti us messaġġ tul raġjonevoli. 127 00:05:31,860 --> 00:05:33,910 Forsi linji koppja, whatnot. 128 00:05:33,910 --> 00:05:35,150 Allura aħna ma check. 129 00:05:35,150 --> 00:05:38,160 Minflok dawn l-għalf us fi ktieb kollu li l-messaġġ, 130 00:05:38,160 --> 00:05:42,450 u tifwir l-ammont ta ' ispazju li aħna ve allokat għal dan. 131 00:05:42,450 --> 00:05:48,140 U dak li jiġri huwa li jista 'jissostitwixxu postijiet li mhuwiex suppost. 132 00:05:48,140 --> 00:05:52,890 >> So I know Professur Malan qal xi ħaġa dwar attakki overflow buffer. 133 00:05:52,890 --> 00:05:59,050 Allura dak fejn l-utent rieda input xi ammont massiv ta 'data fil-tamiet 134 00:05:59,050 --> 00:06:02,840 li hu overwrites passat l-aħħar ta buffer tiegħek 135 00:06:02,840 --> 00:06:06,479 u tissostitwixxi something-- I wonder I għandna dawk pjastri fil hawn. 136 00:06:06,479 --> 00:06:08,270 I do not think għandna dawk pjastri fil hawn. 137 00:06:08,270 --> 00:06:09,960 138 00:06:09,960 --> 00:06:14,460 Imma bażikament hu overwrites xi porzjon tal-memorja 139 00:06:14,460 --> 00:06:17,780 li jippermettilu aċċess għal partijiet tal-kompjuter tiegħek 140 00:06:17,780 --> 00:06:19,530 li inti ma tkunx normalment ikollhom aċċess għall. 141 00:06:19,530 --> 00:06:20,750 142 00:06:20,750 --> 00:06:23,155 >> Ħaġa akbar ma overflow buffer huwa biss 143 00:06:23,155 --> 00:06:26,420 biex jifhmu li jiġri meta inti mhux 144 00:06:26,420 --> 00:06:29,210 verifika kemm tiegħek utent huwa tqegħid fil. 145 00:06:29,210 --> 00:06:32,770 Meta m'intix-tip ta ' salvagwardja kontra dik. 146 00:06:32,770 --> 00:06:36,820 U fl eħfef tagħha ħaġa, huwa biss l-utent tiegħek 147 00:06:36,820 --> 00:06:39,130 inputjar ammont massiv ta 'data fil f'tentattiv 148 00:06:39,130 --> 00:06:45,090 biex jissostitwixxu xi sigurtà porzjon ta 'memorja tiegħek. 149 00:06:45,090 --> 00:06:46,310 Li kollox huwa. 150 00:06:46,310 --> 00:06:49,810 >> Allura dan hawn, munzell u borġ. 151 00:06:49,810 --> 00:06:53,090 Bażikament dan kollu huwa hija biss rappreżentazzjoni tal-memorja 152 00:06:53,090 --> 00:06:54,449 u fejn l-affarijiet huma maħżuna. 153 00:06:54,449 --> 00:06:56,240 Li tassew it-tip ta ' kull ma għandek bżonn tkun taf. 154 00:06:56,240 --> 00:06:58,520 L-affarijiet akbar li għandek bżonn tkun taf huma 155 00:06:58,520 --> 00:07:01,910 that-- let me ara jekk hemm better-- hawn. 156 00:07:01,910 --> 00:07:05,380 Allura dan huwa l-munzell hawnhekk. 157 00:07:05,380 --> 00:07:08,410 >> Allura munzell għandu ma ' kollha ta 'funzjonijiet tiegħek 158 00:07:08,410 --> 00:07:10,140 li int ssejjaħ fi kwalunkwe ħin partikolari. 159 00:07:10,140 --> 00:07:15,060 U x'hemm importanti li tiftakar jmorru off ta 'ġimgħa li għaddiet ma malloc 160 00:07:15,060 --> 00:07:21,080 hija li inti ma verament ikollhom kontroll meħtieġ fuqha. 161 00:07:21,080 --> 00:07:24,780 Dan kollu jiddependi fuq meta ċerti funzjonijiet huma esekuzzjoni. 162 00:07:24,780 --> 00:07:28,170 U meta jkunu qed jesegwixxi, huma ikollhom liema huma msejħa frames munzell 163 00:07:28,170 --> 00:07:29,290 li jmorru up here. 164 00:07:29,290 --> 00:07:32,520 >> Allura dan kollu tip ta 'jiġri mingħajr ebda kontribut reali mill inti. 165 00:07:32,520 --> 00:07:33,630 166 00:07:33,630 --> 00:07:35,510 Tikteb programm tiegħek, u inti let run, 167 00:07:35,510 --> 00:07:38,470 u l-munzell tip ta 'jieħu ħsieb innifsu li tkun teħtieġ biex. 168 00:07:38,470 --> 00:07:42,940 Mela jekk prinċipali int titlob kubi, li se tiġi mgħoddija up here. 169 00:07:42,940 --> 00:07:44,110 Hija ser toħloq qafas. 170 00:07:44,110 --> 00:07:48,330 Iżda hemm xejn inti espliċitament tagħmel biex joħolqu dak il-qafas munzell minbarra 171 00:07:48,330 --> 00:07:51,430 tikteb il-funzjoni li tibda bil, OK? 172 00:07:51,430 --> 00:07:56,500 >> X'inhu tip ta 'taħt tiegħek kontroll huwa l-borġ ma malloc. 173 00:07:56,500 --> 00:08:01,950 Allura kull meta inti xi ħaġa malloc, qed tieħu memorja mill-borġ. 174 00:08:01,950 --> 00:08:05,110 U li huwa memorja li inti jkollhom, għal nuqqas ta 'kelma aħjar, 175 00:08:05,110 --> 00:08:10,300 kontroll espliċitu fuq, għaliex niftakar malloc 176 00:08:10,300 --> 00:08:12,530 huwa bażikament hemm sakemm you say mod ieħor. 177 00:08:12,530 --> 00:08:14,890 Għal dawk tal inti li jarah taqsima aħħar ġimgħa, 178 00:08:14,890 --> 00:08:17,670 huwa hemmhekk sakemm inti għid li jmorru lil hinn. 179 00:08:17,670 --> 00:08:20,850 Se jkun hemm sakemm inkella told le. 180 00:08:20,850 --> 00:08:24,750 Allura l-borġ huwa biss xi ħaġa inti tista 'taħseb bħala memorja 181 00:08:24,750 --> 00:08:26,150 li inti għandek kontroll fuq. 182 00:08:26,150 --> 00:08:29,010 U dawk huma biss il- żewġ affarijiet kbar differenti. 183 00:08:29,010 --> 00:08:31,320 184 00:08:31,320 --> 00:08:38,330 >> Għajr li, m'għandekx ikollok jinkwetaw wisq dwar munzell u borġ 185 00:08:38,330 --> 00:08:42,159 mistoqsijiet jew tipikament aktar ġusta jekk għandek parametri lokali 186 00:08:42,159 --> 00:08:45,385 jew funzjoni ma jkun fuq il-munzell jew il-borġ. 187 00:08:45,385 --> 00:08:47,260 Ovvjament f'dan il-każ ikun il-munzell. 188 00:08:47,260 --> 00:08:49,630 Jekk int mallocing xi ħaġa, fejn huwa li ġejjin minn? 189 00:08:49,630 --> 00:08:50,129 -Borġ. 190 00:08:50,129 --> 00:08:51,147 191 00:08:51,147 --> 00:08:54,230 Jekk inti tħares lejn kwizzijiet prattika, dawk huma ġeneralment it-tip ta 'mistoqsijiet 192 00:08:54,230 --> 00:08:55,460 li huma għandhom. 193 00:08:55,460 --> 00:08:57,340 >> Inti ma għandekx għalfejn tinkwieta wisq dwar dan. 194 00:08:57,340 --> 00:09:00,980 Ikollok fis aktar espliċitu dwar munzell u borġ 195 00:09:00,980 --> 00:09:03,460 aktar tard jew fi klassijiet oħra KEFA. 196 00:09:03,460 --> 00:09:06,220 Hekk biss li jkollhom tip ta ' idea ġenerali ta 'dak li din hija 197 00:09:06,220 --> 00:09:09,100 se jkun tajjeb, li jiena biss tip ta 'marru fuq. 198 00:09:09,100 --> 00:09:10,650 199 00:09:10,650 --> 00:09:12,090 Kwalunkwe suġġetti oħra? 200 00:09:12,090 --> 00:09:12,590 Iva? 201 00:09:12,590 --> 00:09:14,923 >> UDJENZA: Tista tmur fuq Pointers għal darb'oħra verament malajr? 202 00:09:14,923 --> 00:09:15,870 ZAMYLA Chan: pointers? 203 00:09:15,870 --> 00:09:18,470 Tridu kunċettwali ħarsa ġenerali ta 'pointers 204 00:09:18,470 --> 00:09:19,994 jew għandek prattika ma pointers? 205 00:09:19,994 --> 00:09:21,410 UDJENZA: Tip ta bħall-sintassi. 206 00:09:21,410 --> 00:09:22,360 ZAMYLA Chan: Is-sintassi? 207 00:09:22,360 --> 00:09:22,860 Yeah. 208 00:09:22,860 --> 00:09:32,090 209 00:09:32,090 --> 00:09:33,090 OK, aħna qed jkollna hemmhekk. 210 00:09:33,090 --> 00:09:38,300 211 00:09:38,300 --> 00:09:42,040 Yeah, għalhekk dan huwa biss tip ta 'xi ħaġa meta jkollok funzjoni jirrikorri, 212 00:09:42,040 --> 00:09:45,954 kull darba li l-funzjoni jirrikorri hija imsejħa, hija biss iżid qafas munzell oħra. 213 00:09:45,954 --> 00:09:47,870 Pretty ħafna eżempju ta 'kif inti ma verament 214 00:09:47,870 --> 00:09:50,330 jkollhom kontroll fuq il- frejms fuq munzell tiegħek. 215 00:09:50,330 --> 00:09:54,010 216 00:09:54,010 --> 00:09:54,585 >> OK, pointers. 217 00:09:54,585 --> 00:09:57,120 218 00:09:57,120 --> 00:09:59,235 Kull dritt, hekk joħolqu pointers. 219 00:09:59,235 --> 00:10:00,300 220 00:10:00,300 --> 00:10:02,420 Ftakar, huwa biss tip stilla. 221 00:10:02,420 --> 00:10:07,140 Sabiex ikun x'ikun it-tip ta 'data li int ser tkun tipponta lejn. 222 00:10:07,140 --> 00:10:08,720 223 00:10:08,720 --> 00:10:11,440 Għalhekk dan ikun pointer għal int. 224 00:10:11,440 --> 00:10:13,140 Dan ikun pointer għal char. 225 00:10:13,140 --> 00:10:14,740 Dan ikun pointer li float. 226 00:10:14,740 --> 00:10:17,980 Allura huwa bażikament kwalunkwe inti tixtieq li tkun tipponta lejn, 227 00:10:17,980 --> 00:10:22,300 star huwa kif inti tiddikjara l-pointer, OK? 228 00:10:22,300 --> 00:10:26,200 >> Iżda mbagħad ovvjament gets ftit delikata meta jkollok pointer 229 00:10:26,200 --> 00:10:27,370 jew għandek stilla x'ikun. 230 00:10:27,370 --> 00:10:31,260 Allura l-differenza kbira hija meta int declaring-- 231 00:10:31,260 --> 00:10:45,590 hekk aħna some-- hekk dan jieħu xi stilla int. 232 00:10:45,590 --> 00:10:49,650 Allura dan huwa xi pointer jitlob x għal int, right? 233 00:10:49,650 --> 00:10:54,600 Mela ftakar dak li dan ma huwa dan jitlob is-sistema x. 234 00:10:54,600 --> 00:10:56,970 U dan se għandhom xi indirizz, id-dritt? 235 00:10:56,970 --> 00:11:00,515 Mela ejja biss jgħidu li dan huwa l-indirizz tagħna. 236 00:11:00,515 --> 00:11:01,590 237 00:11:01,590 --> 00:11:03,570 Pointers istiva indirizzi. 238 00:11:03,570 --> 00:11:08,660 Allura dak li dan jgħid huwa li f'dan post, aħna qed jaħżnu l int. 239 00:11:08,660 --> 00:11:10,770 240 00:11:10,770 --> 00:11:15,770 >> Allura mod ieħor nistgħu naħsbu ta ' dan hija li din hija xi int. 241 00:11:15,770 --> 00:11:17,010 242 00:11:17,010 --> 00:11:20,350 Aħna ma verament assenjati lill xejn s'issa, iżda huwa biss int. 243 00:11:20,350 --> 00:11:31,540 Allura nistgħu nagħmlu huwa jekk aħna istilla x ugwali 5, dan isir 5, OK? 244 00:11:31,540 --> 00:11:38,350 Dan jgħid mur x'ikun x hija tipponta lejn, sabiex imorru għal dan l-indirizz 245 00:11:38,350 --> 00:11:40,210 u jagħmilha ugwali għal 5. 246 00:11:40,210 --> 00:11:44,390 Allura aħna tassenja 5 għal dan l-indirizz, id-dritt? 247 00:11:44,390 --> 00:11:52,540 >> U mbagħad jekk inti tagħmel dan, dan jagħtina l-indirizz ta '. 248 00:11:52,540 --> 00:11:54,730 Dan huwa l-indirizz tal-operatur. 249 00:11:54,730 --> 00:11:57,700 Allura x'inhi l-indirizz ta 'x? 250 00:11:57,700 --> 00:11:58,809 Ma nafux. 251 00:11:58,809 --> 00:12:00,225 Aħna ma assenjati lilha indirizz. 252 00:12:00,225 --> 00:12:03,000 253 00:12:03,000 --> 00:12:09,105 Nistgħu ngħidu huwa some-- issa aħna taw dan l-indirizz, hekk-indirizz huwa ta '4. 254 00:12:09,105 --> 00:12:10,690 255 00:12:10,690 --> 00:12:16,980 U fil-fatt jekk aħna jgħaddu xi ħaġa bħal dan, it-tip ta 'dak li għamilna. 256 00:12:16,980 --> 00:12:25,800 Allura jaħdmu permezz here-- nsib dan jgħin jekk inti tiġbed out pointers. 257 00:12:25,800 --> 00:12:28,270 Jekk int fuq eżami tiegħek, I jirrakkomanda ħafna tpinġija kaxxi. 258 00:12:28,270 --> 00:12:29,490 259 00:12:29,490 --> 00:12:33,310 >> Allura dan l-ewwel wieħed, int x ugwali 5. 260 00:12:33,310 --> 00:12:37,370 Dan sempliċiment ifisser li għandna xi post fil-memorja li hija ta '5, id-dritt? 261 00:12:37,370 --> 00:12:38,540 262 00:12:38,540 --> 00:12:44,760 U t-tabella tagħna hawn tgħidilna li huwa fl-indirizz 0x04. 263 00:12:44,760 --> 00:12:48,770 264 00:12:48,770 --> 00:12:50,280 U allura aħna joħolqu xi pointer. 265 00:12:50,280 --> 00:12:51,820 266 00:12:51,820 --> 00:12:55,310 Mela ejja din tinqasam wieħed kull darba. 267 00:12:55,310 --> 00:12:59,820 Allura dan joħloq xi kaxxa għal int, right? 268 00:12:59,820 --> 00:13:01,970 Li għaddej biex iżommu xi wħud indirizz ta 'dan. 269 00:13:01,970 --> 00:13:03,470 Allura dan huwa xi pointer. 270 00:13:03,470 --> 00:13:04,940 271 00:13:04,940 --> 00:13:06,510 U dan ġibs huwa verament żgħir. 272 00:13:06,510 --> 00:13:07,472 273 00:13:07,472 --> 00:13:08,680 Allura aħna għandna xi pointer hawn. 274 00:13:08,680 --> 00:13:10,060 275 00:13:10,060 --> 00:13:13,530 U mejda tagħna tgħidilna li huwa l-indirizz huwa 0x08. 276 00:13:13,530 --> 00:13:15,190 277 00:13:15,190 --> 00:13:16,200 Kessaħ. 278 00:13:16,200 --> 00:13:23,240 U aħna qed jassenjaw fl-indirizz ta 'x. 279 00:13:23,240 --> 00:13:26,330 >> Ftakar, pointers istiva indirizzi, OK? 280 00:13:26,330 --> 00:13:32,050 Mela jekk irridu li jżommu x, għandna li tuża l-operatur indirizz, li 281 00:13:32,050 --> 00:13:36,520 huwa l-ampersand, biex jiksbu l-indirizz ta 'x, li f'dan il-każ, 0x04. 282 00:13:36,520 --> 00:13:39,130 283 00:13:39,130 --> 00:13:44,430 U mbagħad jekk ikollna xi kopja int, dan biss 284 00:13:44,430 --> 00:13:48,060 joħloq xi kaxxa ieħor li jkollha int imsejħa kopja. 285 00:13:48,060 --> 00:13:49,410 286 00:13:49,410 --> 00:13:55,330 U jekk aħna tassenja lill this-- għalhekk dan huwa referenzar dan. 287 00:13:55,330 --> 00:14:00,090 Allura jgħid mur kwalunkwe indirizz pointer istivi. 288 00:14:00,090 --> 00:14:05,330 Pointer istivi dan l-indirizz, hekk aħna'd jmorru fuq hawn, 289 00:14:05,330 --> 00:14:07,130 u aħna ngħidu, OK, x'hemm dan? 290 00:14:07,130 --> 00:14:08,610 Huwa 5. 291 00:14:08,610 --> 00:14:09,815 Allura kopja isir 5. 292 00:14:09,815 --> 00:14:11,800 293 00:14:11,800 --> 00:14:12,540 Jagħmel sens? 294 00:14:12,540 --> 00:14:15,540 295 00:14:15,540 --> 00:14:25,020 >> X'jiġri jekk I ippruvaw tassenja dan biss pointer. 296 00:14:25,020 --> 00:14:26,476 297 00:14:26,476 --> 00:14:27,850 X'jagħmel pointer attwalment ugwali? 298 00:14:27,850 --> 00:14:31,126 299 00:14:31,126 --> 00:14:34,315 Ikun biss x'ikun pointer fih, id-dritt? 300 00:14:34,315 --> 00:14:36,400 301 00:14:36,400 --> 00:14:37,580 U mbagħad jekk dak I ma 'dan? 302 00:14:37,580 --> 00:14:38,922 303 00:14:38,922 --> 00:14:39,880 What would kopja tkun issa? 304 00:14:39,880 --> 00:14:41,365 305 00:14:41,365 --> 00:14:42,275 >> UDJENZA: 0x08. 306 00:14:42,275 --> 00:14:44,150 ZAMYLA Chan: Yep, il- indirizz tal pointer tagħna. 307 00:14:44,150 --> 00:14:46,832 308 00:14:46,832 --> 00:14:48,790 Kwalunkwe parti minn dak li jeħtieġ li jerġgħu jiġu spjegati? 309 00:14:48,790 --> 00:14:50,170 310 00:14:50,170 --> 00:14:50,670 Kessaħ. 311 00:14:50,670 --> 00:14:53,350 312 00:14:53,350 --> 00:14:57,740 Hemm definittivament ħafna problema gost fuq waħda kwizz 313 00:14:57,740 --> 00:15:00,100 li nistgħu fuq dik jagħtik aktar prattika. 314 00:15:00,100 --> 00:15:00,937 315 00:15:00,937 --> 00:15:03,270 Il-guys mill-aħħar ġimgħa jista jgħidlek ma kienx li ħażina. 316 00:15:03,270 --> 00:15:06,000 Aħna ltqajna permezz ta 'kollu chart, u kulħadd għamlet kbir. 317 00:15:06,000 --> 00:15:10,830 >> OK, b'tali mod li ħarsa ġenerali tal sintassi ta pointers. 318 00:15:10,830 --> 00:15:15,070 Akbar ħaġa huwa fehim kif biex jinħolqu minnhom, do referenzar, 319 00:15:15,070 --> 00:15:18,190 u l-indirizz tal-, OK? 320 00:15:18,190 --> 00:15:18,690 Kessaħ. 321 00:15:18,690 --> 00:15:20,775 Kwalunkwe suġġetti oħra qabel aħna adsa fis-prattika. 322 00:15:20,775 --> 00:15:24,280 323 00:15:24,280 --> 00:15:28,011 Ukoll jekk aħna qed tmur permezz il-problemi prattika 324 00:15:28,011 --> 00:15:30,760 u hemm xi ħaġa inti tixtieq a aġġornament fuq, nistgħu nagħmlu li wisq. 325 00:15:30,760 --> 00:15:31,300 Do ikollok xi ħaġa? 326 00:15:31,300 --> 00:15:32,758 >> UDJENZA: Structs u listi marbuta. 327 00:15:32,758 --> 00:15:35,130 ZAMYLA Chan: Structs u listi marbuta, OK. 328 00:15:35,130 --> 00:15:37,100 Hekk structs. 329 00:15:37,100 --> 00:15:38,990 Aħna fil-fatt ser matul dan tonight wisq. 330 00:15:38,990 --> 00:15:40,130 331 00:15:40,130 --> 00:15:41,890 OK, hekk structs. 332 00:15:41,890 --> 00:15:47,490 Structs huma bażikament biss mod biex inti żżomm 333 00:15:47,490 --> 00:15:50,430 Valuri multipli ta 'tipi differenti. 334 00:15:50,430 --> 00:15:55,150 Allura ma 'firxa aħna kostretti li tip ta 'dejta wieħed. 335 00:15:55,150 --> 00:16:00,965 Firxa tagħna jew għandu jkun biss numri, jew biss ikunu Chars, jew biss tkun flowts. 336 00:16:00,965 --> 00:16:02,240 337 00:16:02,240 --> 00:16:05,470 >> Imma forsi inti għandek bżonn fihom aktar minn dak. 338 00:16:05,470 --> 00:16:09,130 Forsi inti għandek bżonn hold-- jekk qed jitkellem dwar student, 339 00:16:09,130 --> 00:16:13,660 int se jkollhom dar tagħhom, tagħhom Numru ta 'ID, l-età tagħhom, fejn jgħixu, 340 00:16:13,660 --> 00:16:14,240 dritt? 341 00:16:14,240 --> 00:16:16,460 U kollha ta 'dawk huma tipi differenti ta 'tipi. 342 00:16:16,460 --> 00:16:18,680 Allura inti ma tistax taħżen dawk kollha fil-firxa. 343 00:16:18,680 --> 00:16:21,750 >> Allura dak li inti tista 'tagħmel huwa inti jistgħu joħolqu Struct, li 344 00:16:21,750 --> 00:16:26,240 inti tista 'taħseb bħala tiegħek stess tip ta 'dejta personali. 345 00:16:26,240 --> 00:16:29,130 Allura minflok sempliċiment li ints u minflok sempliċiment li jkollhom sufruni, 346 00:16:29,130 --> 00:16:33,210 inti jista 'jkollhom student tip li tkun kollha ta 'dawn l-oqsma fiha. 347 00:16:33,210 --> 00:16:39,740 Allura l-mod aħna initialize structs tagħna is-- attwalment 348 00:16:39,740 --> 00:16:44,921 peress kitba tiegħi hija terribbli, aħna huma ser biex jgħaddi għal ittajpjar. 349 00:16:44,921 --> 00:16:45,420 Woo. 350 00:16:45,420 --> 00:16:48,800 351 00:16:48,800 --> 00:16:53,150 >> OK, hekk jekk irridu li tinħoloq struct-- Jien biss ser isfel hawn. 352 00:16:53,150 --> 00:16:57,730 Tinjora l-fl ewlenija kwalunkwe li aħna se jużaw aktar tard. 353 00:16:57,730 --> 00:17:02,330 Allura l-mod inti tixtieq li tagħmel huwa ma typedef Struct. 354 00:17:02,330 --> 00:17:10,530 355 00:17:10,530 --> 00:17:13,349 U ejja biss sejħa dan l-istudent għaliex dan huwa dak I kienet qed tuża. 356 00:17:13,349 --> 00:17:17,801 OK, hekk typedef ifisser li int jiddefinixxi tip ġdid, OK? 357 00:17:17,801 --> 00:17:20,140 358 00:17:20,140 --> 00:17:24,355 Hemm sfumaturi lejn meta inti tagħmel biss Struct versus Struct typedef. 359 00:17:24,355 --> 00:17:26,313 Għal kull fini u skopijiet, inti guys huma biss 360 00:17:26,313 --> 00:17:29,490 ser jassumi li qed madwar l-istess u biss 361 00:17:29,490 --> 00:17:30,820 użu typedef Struct għal issa. 362 00:17:30,820 --> 00:17:35,180 Hija ser isiru b'mod aktar evidenti fil tiegħek P jmiss tistabbilixxi x'inhuma dawn id-differenzi huma, 363 00:17:35,180 --> 00:17:37,960 imma jien ma naħsibx li għandek bżonn biex joqogħdu jinkwetaw dwar dak id-dritt issa. 364 00:17:37,960 --> 00:17:40,360 Nixtieq ħafna pjuttost inti taf kif toħloq waħda, 365 00:17:40,360 --> 00:17:41,880 jkollhom aċċess għaliha, u tassenja [? valur. ?] 366 00:17:41,880 --> 00:17:47,820 >> A tip ġdid ta 'Struct, u aħna ssejjaħ dan student. 367 00:17:47,820 --> 00:17:52,640 Allura wara we qed isir ħolqien ta 'dan, għal kull skopijiet u raġunijiet, 368 00:17:52,640 --> 00:17:55,070 inti se jkollhom tip imsejjaħ student. 369 00:17:55,070 --> 00:17:59,610 U inti tista 'taħseb hija biss bħala tip bħal int, jew float, jew char. 370 00:17:59,610 --> 00:18:01,820 Huwa biss tip ieħor, OK? 371 00:18:01,820 --> 00:18:04,530 >> Allura f'dan il-wieħed, dak li għandna? 372 00:18:04,530 --> 00:18:05,420 Għandna forsi isem. 373 00:18:05,420 --> 00:18:08,275 Allura forsi rridu isem string. 374 00:18:08,275 --> 00:18:09,610 375 00:18:09,610 --> 00:18:14,065 U għandna forsi int li l-ID. 376 00:18:14,065 --> 00:18:16,360 377 00:18:16,360 --> 00:18:19,085 U għandna ieħor li l-numru tat-telefon. 378 00:18:19,085 --> 00:18:21,990 379 00:18:21,990 --> 00:18:26,200 U aħna għandna some-- ejja ara. 380 00:18:26,200 --> 00:18:27,200 X'iktar jista għandna? 381 00:18:27,200 --> 00:18:29,385 Aħna ser ikollhom xi string fil-dar tiegħu. 382 00:18:29,385 --> 00:18:32,340 383 00:18:32,340 --> 00:18:34,510 Kollha affarijiet li student għandu. 384 00:18:34,510 --> 00:18:36,960 >> Allura dan joħloq Struct issa. 385 00:18:36,960 --> 00:18:41,450 Allura kif tista noħolqu student? 386 00:18:41,450 --> 00:18:46,960 Jekk aħna għandna xi varjabbli li huwa ser jitkellmu dwar Walker hawn, 387 00:18:46,960 --> 00:18:51,245 hekk aħna have-- we qed biss ser sejħa dan walker. 388 00:18:51,245 --> 00:18:52,520 Hu għandu bżonn tip. 389 00:18:52,520 --> 00:18:53,770 X'hemm tip tiegħek? 390 00:18:53,770 --> 00:18:54,520 UDJENZA: Student. 391 00:18:54,520 --> 00:18:55,395 ZAMYLA Chan: Student. 392 00:18:55,395 --> 00:18:57,130 393 00:18:57,130 --> 00:19:04,800 Allura dan biss joħloq oġġett inti tista think ta 'li għandu dawn kollha affarijiet. 394 00:19:04,800 --> 00:19:07,880 Inti biss ħolqot student walker. 395 00:19:07,880 --> 00:19:10,910 Allura issa għandna bżonn biex ikunu jistgħu li tassenja dawn kollha, id-dritt? 396 00:19:10,910 --> 00:19:13,500 Sabiex ħadd ma tiftakar kif aħna aċċess fi Struct? 397 00:19:13,500 --> 00:19:14,762 398 00:19:14,762 --> 00:19:15,470 UDJENZA: Perjodu. 399 00:19:15,470 --> 00:19:16,730 ZAMYLA Chan: Perjodu Eżattament. 400 00:19:16,730 --> 00:19:23,795 Hekk jekk ridna li tassenja lilu isem, stajna nagħmlu dan. 401 00:19:23,795 --> 00:19:24,820 402 00:19:24,820 --> 00:19:28,680 Ovvjament dan ikun be-- din il-parti hawnhekk 403 00:19:28,680 --> 00:19:31,831 tkun fi ħdan prinċipali, hekk fil-fatt let me jagħmlu dan. 404 00:19:31,831 --> 00:19:40,980 405 00:19:40,980 --> 00:19:44,250 Tiddikjara dan ta 'hawn fuq prinċipali hekk li nistgħu nużaw dan fi prinċipali. 406 00:19:44,250 --> 00:19:52,250 407 00:19:52,250 --> 00:20:00,980 Allura issa I tixtieq li tagħmel ID, u aħna ser biss tagħmel xi hemmhekk, 408 00:20:00,980 --> 00:20:02,970 u allura aħna ser tassenja dar. 409 00:20:02,970 --> 00:20:07,990 410 00:20:07,990 --> 00:20:09,000 Bam. 411 00:20:09,000 --> 00:20:09,650 Kessaħ. 412 00:20:09,650 --> 00:20:19,870 >> Allura issa għandna qatt ħtieġa li l-aċċess xejn aktar tard on-- forsi we-- 413 00:20:19,870 --> 00:20:25,920 jekk aħna qatt bżonn l-aċċess xejn, ejja biss tagħmel kopja int ID. 414 00:20:25,920 --> 00:20:27,400 415 00:20:27,400 --> 00:20:30,530 U nixtieq li kopja ID fis dan Walker. 416 00:20:30,530 --> 00:20:31,370 Kif tista 'nagħmel dan? 417 00:20:31,370 --> 00:20:33,670 418 00:20:33,670 --> 00:20:37,790 Ikollok bżonn li jkollhom aċċess fil-walker Struct li [? mur li?] [? E?]. 419 00:20:37,790 --> 00:20:41,280 U l-istess mod li aħna assenjat it up here, kif 420 00:20:41,280 --> 00:20:45,573 jista aħna jkollhom aċċess għaliha meta rridu jagħtu li l-valur għal xi ħaġa oħra? 421 00:20:45,573 --> 00:20:46,406 UDJENZA: Walker.id. 422 00:20:46,406 --> 00:20:47,252 423 00:20:47,252 --> 00:20:48,376 ZAMYLA Chan: Yeah, eżattament. 424 00:20:48,376 --> 00:20:51,884 425 00:20:51,884 --> 00:20:54,175 Allura dak pjuttost ħafna kollha għandek bżonn tkun taf għall structs. 426 00:20:54,175 --> 00:20:55,750 427 00:20:55,750 --> 00:20:58,560 Inti biss bżonn biex naħsbu ta ' bħala varjabbli ieħor. 428 00:20:58,560 --> 00:21:01,710 Bażikament joħolqu tiegħek tip varjabbli stess, OK? 429 00:21:01,710 --> 00:21:04,440 430 00:21:04,440 --> 00:21:07,970 Inti tużaha biex tiddikjara varjabbli fi kwalunkwe mod. 431 00:21:07,970 --> 00:21:10,290 Hawnhekk walker għadu varjabbli. 432 00:21:10,290 --> 00:21:14,230 Hija biss għandha student tip issa minflok ta 'int tip, jew string tip, 433 00:21:14,230 --> 00:21:15,070 jew char tip. 434 00:21:15,070 --> 00:21:17,014 435 00:21:17,014 --> 00:21:19,930 Jekk kien hemm mod faċli biex jitkellmu dwar structs, huwa litteralment biss 436 00:21:19,930 --> 00:21:24,430 joħolqu tip ta 'dejta tiegħek stess li jippermetti li inti grupp 437 00:21:24,430 --> 00:21:28,320 dawn kollha differenti tip ta 'data flimkien. 438 00:21:28,320 --> 00:21:29,754 439 00:21:29,754 --> 00:21:31,595 Does li jagħmel sens? 440 00:21:31,595 --> 00:21:33,920 441 00:21:33,920 --> 00:21:34,420 OK. 442 00:21:34,420 --> 00:21:35,920 443 00:21:35,920 --> 00:21:37,530 Li u jaċċessjaw ma tikek. 444 00:21:37,530 --> 00:21:38,790 445 00:21:38,790 --> 00:21:39,960 Pretty ħafna kollha li għandek bżonn. 446 00:21:39,960 --> 00:21:41,150 447 00:21:41,150 --> 00:21:46,600 >> OK, fejn ma PowerPoint tiegħi tmur? 448 00:21:46,600 --> 00:21:47,580 Hawnhekk huwa. 449 00:21:47,580 --> 00:21:49,050 450 00:21:49,050 --> 00:21:50,520 Ukoll dan huwa stramb. 451 00:21:50,520 --> 00:21:53,950 452 00:21:53,950 --> 00:21:55,420 Ah. 453 00:21:55,420 --> 00:21:56,766 OK, berred. 454 00:21:56,766 --> 00:21:58,876 455 00:21:58,876 --> 00:22:01,000 Kwalunkwe affarijiet oħra jew nistgħu tixtieq li ras għall-prattika? 456 00:22:01,000 --> 00:22:02,210 457 00:22:02,210 --> 00:22:02,710 Prattika? 458 00:22:02,710 --> 00:22:03,501 OK. 459 00:22:03,501 --> 00:22:04,000 Biża. 460 00:22:04,000 --> 00:22:05,642 461 00:22:05,642 --> 00:22:06,600 Jien ser ħruġ dan. 462 00:22:06,600 --> 00:22:08,490 Jekk fi kwalunkwe punt matul mistoqsijiet prattika, 463 00:22:08,490 --> 00:22:12,630 Ninsab kuntenta li nġeddu mill-qiegħ u jgħaddu l-affarijiet. 464 00:22:12,630 --> 00:22:15,240 So I jkollhom kwizz żero up here. 465 00:22:15,240 --> 00:22:18,370 Jekk inti guys tixtieq li jiġbdu it up fuq il-kompjuter tiegħek, 466 00:22:18,370 --> 00:22:20,670 bħad tieħu ħamsa minuti biex tfittex permezz. 467 00:22:20,670 --> 00:22:23,540 Forsi jagħżel xi top mistoqsijiet li inti tixtieq li tmur fuq. 468 00:22:23,540 --> 00:22:27,390 Jekk inti guys ma tistax tiddeċiedi, aħna ser biss bil-mod jibdew jaħdmu permezz tagħhom, 469 00:22:27,390 --> 00:22:31,590 imma jien ċert hemm ser jkun hemm xi mistoqsijiet li inti huma partikolarment 470 00:22:31,590 --> 00:22:34,890 ħerqana li jitkellmu dwar u jkollhom me jaħdmu permezz miegħek kollha. 471 00:22:34,890 --> 00:22:36,580 Hekk biss jimxi 'l quddiem u tieħu ħames minuti. 472 00:22:36,580 --> 00:22:37,780 Iscroll permezz. 473 00:22:37,780 --> 00:22:40,620 U dan huwa l-kwizz mill-2013. 474 00:22:40,620 --> 00:22:41,841 >> UDJENZA: Zero? 475 00:22:41,841 --> 00:22:43,630 >> ZAMYLA Chan: Yeah, kwizz żero. 476 00:22:43,630 --> 00:22:45,647 Aħna ma tagħmel kwizz Jittieħed wieħed. 477 00:22:45,647 --> 00:22:46,980 Aħna ser tagħmel dan fi ftit ġimgħat. 478 00:22:46,980 --> 00:22:52,941 479 00:22:52,941 --> 00:22:55,190 Wkoll għal dawk minnkom li daħal tard, għandna kandju, 480 00:22:55,190 --> 00:23:00,580 so do inti guys tixtieq kandju? 481 00:23:00,580 --> 00:23:01,530 >> UDJENZA: Sure. 482 00:23:01,530 --> 00:23:03,321 >> ZAMYLA Chan: Jien biss ser jgħaddu madwar. 483 00:23:03,321 --> 00:23:09,774 484 00:23:09,774 --> 00:23:11,940 Ħej, jekk inti guys tikseb hawn kmieni, ikollok aktar kandju. 485 00:23:11,940 --> 00:23:12,500 Li l-multa. 486 00:23:12,500 --> 00:23:13,550 Ben, tridu kandju? 487 00:23:13,550 --> 00:23:19,350 488 00:23:19,350 --> 00:23:20,556 Inti tixtieq xi wħud minn dawn? 489 00:23:20,556 --> 00:23:24,122 490 00:23:24,122 --> 00:23:26,080 Hemm ukoll Snickers jekk xi ħadd irid Snickers. 491 00:23:26,080 --> 00:23:27,640 492 00:23:27,640 --> 00:23:29,360 I ser jħallulhom hawn u hawn. 493 00:23:29,360 --> 00:23:30,946 Ħossok liberu. 494 00:23:30,946 --> 00:23:32,485 Tridu jibqgħalu? 495 00:23:32,485 --> 00:23:33,235 UDJENZA: All stabbiliti. 496 00:23:33,235 --> 00:23:33,540 Grazzi. 497 00:23:33,540 --> 00:23:36,248 >> ZAMYLA Chan: U kelli sbieħ ftit pile hemm fil-bidu. 498 00:23:36,248 --> 00:23:49,080 499 00:23:49,080 --> 00:23:51,980 Inti guys tikseb li jieħdu l-kwizz u I nikseb li jkollhom kwizz gradazzjoni parti. 500 00:23:51,980 --> 00:23:54,496 501 00:23:54,496 --> 00:23:55,360 Huwa kaos. 502 00:23:55,360 --> 00:23:56,460 503 00:23:56,460 --> 00:23:57,385 900 eżamijiet. 504 00:23:57,385 --> 00:23:58,650 Li għaddej biex tkun daqshekk gost. 505 00:23:58,650 --> 00:24:00,441 506 00:24:00,441 --> 00:24:02,036 Se tkun kbira. 507 00:24:02,036 --> 00:24:04,430 Jien pretty żgur li wieħed tal-bonding persunal akbar 508 00:24:04,430 --> 00:24:05,380 iljieli tas-sena. 509 00:24:05,380 --> 00:24:15,660 510 00:24:15,660 --> 00:24:19,175 Has ħadd jsir kwizz żero minn sena li għaddiet għadhom mill-kurżità? 511 00:24:19,175 --> 00:24:20,335 >> UDJENZA: Partijiet ta 'dan. 512 00:24:20,335 --> 00:24:21,543 >> ZAMYLA Chan: Partijiet ta 'dan, OK. 513 00:24:21,543 --> 00:24:24,272 514 00:24:24,272 --> 00:24:26,482 Kellek mistoqsijiet dwar xi wieħed minnhom? 515 00:24:26,482 --> 00:24:28,190 UDJENZA: I diġà marru għall ħinijiet tal-uffiċċju. 516 00:24:28,190 --> 00:24:28,898 Grazzi għalkemm. 517 00:24:28,898 --> 00:24:30,187 518 00:24:30,187 --> 00:24:32,520 ZAMYLA Chan: Well, nisperaw huwa għadu tip ta 'għajnuna. 519 00:24:32,520 --> 00:24:42,990 520 00:24:42,990 --> 00:24:45,634 Meta ma inti tmur biex ħinijiet tal-uffiċċju għal dan? 521 00:24:45,634 --> 00:24:47,300 UDJENZA: TF My kellhom magħhom dan wara nofsinhar. 522 00:24:47,300 --> 00:24:47,966 ZAMYLA Chan: Oh. 523 00:24:47,966 --> 00:24:48,977 Min hu TF tiegħek? 524 00:24:48,977 --> 00:24:49,854 525 00:24:49,854 --> 00:24:51,020 UDJENZA: Fred [? Wujaya?]. 526 00:24:51,020 --> 00:24:52,622 527 00:24:52,622 --> 00:24:54,080 ZAMYLA Chan: Hemm tant TFS. 528 00:24:54,080 --> 00:24:55,350 529 00:24:55,350 --> 00:24:55,850 Tant. 530 00:24:55,850 --> 00:25:16,530 531 00:25:16,530 --> 00:25:17,340 Kull dritt. 532 00:25:17,340 --> 00:25:45,310 533 00:25:45,310 --> 00:25:48,950 Kull min ikollu xi jibdew li nista ' LOGHOME stabbiliti li aħna tixtieq taħdem fuq? 534 00:25:48,950 --> 00:25:53,770 535 00:25:53,770 --> 00:25:55,685 I jassumi l-pointers wieħed it-tabella. 536 00:25:55,685 --> 00:25:56,890 537 00:25:56,890 --> 00:25:57,610 Mur għaliha. 538 00:25:57,610 --> 00:25:59,180 >> UDJENZA: Forsi l-iswiċċ wieħed. 539 00:25:59,180 --> 00:26:02,362 540 00:26:02,362 --> 00:26:03,445 ZAMYLA Chan: So numru 12? 541 00:26:03,445 --> 00:26:06,750 542 00:26:06,750 --> 00:26:10,770 I jassumi numru 8 u 9 huma probabbilment dawk in-nies jixtiequ li jmorru fuq. 543 00:26:10,770 --> 00:26:12,116 >> UDJENZA: U 10 u 11. 544 00:26:12,116 --> 00:26:21,860 545 00:26:21,860 --> 00:26:25,806 >> ZAMYLA Tibd: U inti guys taf ikollok paġna waħda ta 'noti, id-dritt? 546 00:26:25,806 --> 00:26:28,450 >> UDJENZA: Yeah, iva, liema huma aħna permessi li jitqiegħdu fuq dik. 547 00:26:28,450 --> 00:26:30,658 >> ZAMYLA Chan: int permess biex tpoġġi xi ħaġa li trid. 548 00:26:30,658 --> 00:26:31,887 549 00:26:31,887 --> 00:26:32,720 U jista 'jiġi ittajpjat. 550 00:26:32,720 --> 00:26:35,270 Safejn I remember, tagħna ġew ittajpjat. 551 00:26:35,270 --> 00:26:37,022 >> UDJENZA: Tista 'tagħmel lura u ż-żewġ naħat? 552 00:26:37,022 --> 00:26:38,780 >> ZAMYLA Chan: Yeah, iż-żewġ naħat. 553 00:26:38,780 --> 00:26:42,940 Allura xi ħaġa bħall-borġ u [? back-end?] borġ, running tiegħek 554 00:26:42,940 --> 00:26:43,780 ħinijiet. 555 00:26:43,780 --> 00:26:44,840 Utli. 556 00:26:44,840 --> 00:26:47,990 Ftit forsi affarijiet dwar pointers biex infakkarkom. 557 00:26:47,990 --> 00:26:49,205 Sintassi għal affarijiet. 558 00:26:49,205 --> 00:26:51,600 559 00:26:51,600 --> 00:26:54,830 Wara biss bħal iskeletru programm jista 'jkun super utli. 560 00:26:54,830 --> 00:27:00,719 Naf li jien dejjem nesa eżattament dak I kien suppost li tikteb int prinċipali, 561 00:27:00,719 --> 00:27:03,010 minħabba I dejjem biss kopja paste minn tiegħi sett preċedenti P 562 00:27:03,010 --> 00:27:06,232 jew huwa diġà hemmhekk, hekk I qatt verament kiteb dan, 563 00:27:06,232 --> 00:27:07,690 hekk li li jista 'jkun super utli. 564 00:27:07,690 --> 00:27:09,280 565 00:27:09,280 --> 00:27:14,320 >> OK, hekk għaliex ma we tibda bin-numru 8 allura? 566 00:27:14,320 --> 00:27:21,730 567 00:27:21,730 --> 00:27:22,810 Kull dritt. 568 00:27:22,810 --> 00:27:23,310 OK. 569 00:27:23,310 --> 00:27:25,060 570 00:27:25,060 --> 00:27:26,310 Sabiex jikkunsidraw il-programm hawn taħt. 571 00:27:26,310 --> 00:27:28,110 572 00:27:28,110 --> 00:27:30,700 Allura ovvjament meta naraw pointers, huwa probabbilment 573 00:27:30,700 --> 00:27:32,200 idea tajba li tibda tpinġija, id-dritt? 574 00:27:32,200 --> 00:27:34,552 575 00:27:34,552 --> 00:27:36,760 I trid tkun taf fejn tiegħi kollha biċċiet kbar ta 'ġibs marru. 576 00:27:36,760 --> 00:27:37,870 Dan huwa tip ta annoying. 577 00:27:37,870 --> 00:27:40,210 578 00:27:40,210 --> 00:27:45,820 >> Allura għandna hawnhekk xi funzjoni tpartit li għaddej biex tieħu f'żewġ pointers. 579 00:27:45,820 --> 00:27:48,630 Allura f'dan il-każ, huma għandu attwalment ikun jaqilbu 580 00:27:48,630 --> 00:27:53,400 affarijiet versus swap oriġinali tagħna funzjoni li ħadet biss kopji. 581 00:27:53,400 --> 00:27:57,030 Allura dak li għaddej biex tagħmel is-- ejja tibda bil prinċipali, 582 00:27:57,030 --> 00:27:58,450 għaliex li fejn 1 huwa. 583 00:27:58,450 --> 00:28:04,296 >> Allura aħna għandna xi int x 1. 584 00:28:04,296 --> 00:28:11,860 Għandna xi y thats ugwali għal 2. 585 00:28:11,860 --> 00:28:14,390 U allura aħna għandna xi swap li għaddej biex tieħu dawk. 586 00:28:14,390 --> 00:28:17,320 U ejja ara dak do għandna hawnhekk. 587 00:28:17,320 --> 00:28:19,542 588 00:28:19,542 --> 00:28:22,709 U fil table-- tagħna oh boy. 589 00:28:22,709 --> 00:28:23,792 Kif am I se tagħmel dan? 590 00:28:23,792 --> 00:28:25,900 Jien ser tiġbed il-mejda tiegħi hawn. 591 00:28:25,900 --> 00:28:49,490 592 00:28:49,490 --> 00:28:50,552 Bilkemm jagħmilha hemmhekk. 593 00:28:50,552 --> 00:28:51,260 Bilkemm jagħmilha. 594 00:28:51,260 --> 00:28:52,470 595 00:28:52,470 --> 00:28:57,960 1, 2, 3, 4, 5, 6, 7. 596 00:28:57,960 --> 00:29:11,220 597 00:29:11,220 --> 00:29:15,706 U jagħtu lilna li 1 huwa 1, u 1 2. 598 00:29:15,706 --> 00:29:16,206 Kessaħ. 599 00:29:16,206 --> 00:29:17,674 600 00:29:17,674 --> 00:29:18,174 Biża. 601 00:29:18,174 --> 00:29:19,650 602 00:29:19,650 --> 00:29:20,464 Hekk 3. 603 00:29:20,464 --> 00:29:21,380 U hemm [? a 1.?] 604 00:29:21,380 --> 00:29:24,500 605 00:29:24,500 --> 00:29:25,250 >> Kull dritt. 606 00:29:25,250 --> 00:29:35,202 U allura l-indirizz ta 'x hija 0x123. 607 00:29:35,202 --> 00:29:41,260 U y hija Ox127. 608 00:29:41,260 --> 00:29:41,760 Kessaħ. 609 00:29:41,760 --> 00:29:42,940 610 00:29:42,940 --> 00:29:43,595 Kull dritt. 611 00:29:43,595 --> 00:29:46,710 Irrid li inti guys jaħdmu fuq din il- għal xogħol biss like-- fuqha 612 00:29:46,710 --> 00:29:48,385 mal-poplu madwar inti. 613 00:29:48,385 --> 00:29:50,340 Nixtieq I kien qal li I filwaqt li kien twaqqaf. 614 00:29:50,340 --> 00:29:50,840 Jaħdmu fuqha. 615 00:29:50,840 --> 00:29:53,270 Ipprova u jaħdmu fuqha minn infuskom għal ftit minuti, 616 00:29:53,270 --> 00:29:54,930 u mbagħad I se taħdem fuq miegħek. 617 00:29:54,930 --> 00:29:57,034 618 00:29:57,034 --> 00:30:00,117 Minħabba li l-uniku mod int verament ser jitgħallmu huwa billi tagħmel it yourself. 619 00:30:00,117 --> 00:31:29,580 620 00:31:29,580 --> 00:31:30,110 Ebda inkwiet. 621 00:31:30,110 --> 00:31:30,610 Xorti tajba. 622 00:31:30,610 --> 00:32:17,390 623 00:32:17,390 --> 00:32:20,030 >> OK, għaliex ma we bil-mod jibdew jaħdmu permezz ta 'dan. 624 00:32:20,030 --> 00:32:23,695 Sabiex kulħadd gets wara linja waħda, x hija l-1. 625 00:32:23,695 --> 00:32:26,860 Wara line tnejn, X u y huma 1 u 2, id-dritt? 626 00:32:26,860 --> 00:32:27,400 Kessaħ. 627 00:32:27,400 --> 00:32:30,310 Allura line tliet huwa fejn affarijiet nikseb interessanti tal-kors. 628 00:32:30,310 --> 00:32:34,970 >> Allura dak li aħna ghamilt hawn hija li għandna issa skambjati. 629 00:32:34,970 --> 00:32:42,360 Aħna ngħidu li x uy jkollhom dawk il-punti, jew ikollhom l-indirizz ta 'xuy, 630 00:32:42,360 --> 00:32:43,390 dritt? 631 00:32:43,390 --> 00:32:48,451 Allura f'dan il-każ, tlieta, dak li huwa l-valur ta '? 632 00:32:48,451 --> 00:32:52,379 633 00:32:52,379 --> 00:32:59,806 a kienet għaddiet fl-, ingħatat il-valur tal-indirizz ta 'x, id-dritt? 634 00:32:59,806 --> 00:33:02,542 635 00:33:02,542 --> 00:33:03,454 >> UDJENZA: 1? 636 00:33:03,454 --> 00:33:05,200 >> ZAMYLA Chan: Allura aħna iżżidhiex mal-x? 637 00:33:05,200 --> 00:33:06,420 X'hemm indirizz X? 638 00:33:06,420 --> 00:33:07,212 >> UDJENZA: 0x123. 639 00:33:07,212 --> 00:33:08,087 >> ZAMYLA Chan: Eżattament. 640 00:33:08,087 --> 00:33:13,960 641 00:33:13,960 --> 00:33:16,790 Imma dak huwa attwalment tipponta lejn? 642 00:33:16,790 --> 00:33:20,790 Jekk konna li dereference a, liema valur ikun jidher tagħtina. 643 00:33:20,790 --> 00:33:21,290 UDJENZA: 1. 644 00:33:21,290 --> 00:33:23,164 ZAMYLA Chan: Ikun agħtina 1, għaliex dak 645 00:33:23,164 --> 00:33:27,810 aħna qed tgħid huwa imorru għal dan indirizz, jgħidulna dak il-valur huwa. 646 00:33:27,810 --> 00:33:28,890 Allura dak li jkun b? 647 00:33:28,890 --> 00:33:30,500 648 00:33:30,500 --> 00:33:31,445 >> UDJENZA: 0x127. 649 00:33:31,445 --> 00:33:32,320 ZAMYLA Chan: Eżattament. 650 00:33:32,320 --> 00:33:33,610 651 00:33:33,610 --> 00:33:35,410 Allura huwa l-indirizz ta 'y. 652 00:33:35,410 --> 00:33:36,580 653 00:33:36,580 --> 00:33:39,811 U allura dak [? dereference? ?] 654 00:33:39,811 --> 00:33:40,310 UDJENZA: 2. 655 00:33:40,310 --> 00:33:42,172 656 00:33:42,172 --> 00:33:43,380 ZAMYLA Chan: OK, hekk issa erbgħa. 657 00:33:43,380 --> 00:33:44,390 658 00:33:44,390 --> 00:33:51,300 Aħna qal huwa equal-- sew issa konna int temperatura isir huwa ugwali għal istilla ta '. 659 00:33:51,300 --> 00:33:53,580 Allura liema bidliet? 660 00:33:53,580 --> 00:33:55,680 Hemm biss ħaġa waħda li l-bidliet hawn. 661 00:33:55,680 --> 00:33:56,180 X'inhu dan? 662 00:33:56,180 --> 00:33:57,892 663 00:33:57,892 --> 00:33:58,624 >> UDJENZA: Temp. 664 00:33:58,624 --> 00:33:59,540 ZAMYLA Chan: Il Temperatura. 665 00:33:59,540 --> 00:34:06,120 Allura nistgħu jikteb kollha ta 'dawn. 666 00:34:06,120 --> 00:34:07,790 667 00:34:07,790 --> 00:34:10,690 Strateġija tajba għal dawn huwa biss jidhru 668 00:34:10,690 --> 00:34:14,050 liema bidliet, minħabba li ħafna drabi hemm biss ħaġa waħda li l- 669 00:34:14,050 --> 00:34:16,300 se jinbidlu fi kwalunkwe punt partikolari, OK? 670 00:34:16,300 --> 00:34:17,960 671 00:34:17,960 --> 00:34:20,100 Allura aħna ħadthom assenjat temperatura. 672 00:34:20,100 --> 00:34:26,929 >> Issa punt li jmiss tagħna, ħamsa, aħna għamlu star ugwali istilla b. 673 00:34:26,929 --> 00:34:28,880 Allura liema bidliet issa? 674 00:34:28,880 --> 00:34:29,760 >> UDJENZA: Star a. 675 00:34:29,760 --> 00:34:32,081 >> ZAMYLA Chan: Star a, hekk kollox jibqa l-istess. 676 00:34:32,081 --> 00:34:38,610 677 00:34:38,610 --> 00:34:39,900 U liema ma stilla ugwali? 678 00:34:39,900 --> 00:34:40,659 >> UDJENZA: 2. 679 00:34:40,659 --> 00:34:41,283 ZAMYLA Chan: 2. 680 00:34:41,283 --> 00:34:42,460 681 00:34:42,460 --> 00:34:42,960 Sabiħ. 682 00:34:42,960 --> 00:34:45,360 683 00:34:45,360 --> 00:34:46,239 Biża. 684 00:34:46,239 --> 00:34:51,190 OK, u mbagħad issa għandna tibda b hija ugwali għal temperatura. 685 00:34:51,190 --> 00:34:53,907 Allura l-ħaġa jinbidlu biss star b. 686 00:34:53,907 --> 00:34:55,344 Kollox jibqa l-istess. 687 00:34:55,344 --> 00:35:01,100 688 00:35:01,100 --> 00:35:02,610 U dak li huwa star b ugwali għal issa? 689 00:35:02,610 --> 00:35:04,840 690 00:35:04,840 --> 00:35:06,190 U inti stajt temm il-mejda. 691 00:35:06,190 --> 00:35:11,620 692 00:35:11,620 --> 00:35:18,460 Minħabba li issa fl-aħħar, jekk ngħidu x u y, nafu li f'dan point-- 693 00:35:18,460 --> 00:35:23,060 nafu li meta aħna inbidlet star a sa 2, 694 00:35:23,060 --> 00:35:29,620 dak li għamilt huwa qal OK, fil jindirizzaw 0x123 hawn, jibdlu. 695 00:35:29,620 --> 00:35:31,780 696 00:35:31,780 --> 00:35:33,290 Issa dan kien 2. 697 00:35:33,290 --> 00:35:34,460 698 00:35:34,460 --> 00:35:40,600 U allura f'dan il-punt, għidna OK, mur l-istilla b. 699 00:35:40,600 --> 00:35:45,305 Allura jmorru għall-indirizz 0x127 u jagħmilha 1. 700 00:35:45,305 --> 00:35:49,670 701 00:35:49,670 --> 00:35:53,110 Allura issa fl-aħħar ħafna meta aħna attwalment ritorn għall prinċipali, 702 00:35:53,110 --> 00:35:56,445 għandna attwalment ikollhom li x hija ugwali għal 2 u y huwa ugwali għal 1. 703 00:35:56,445 --> 00:35:58,500 704 00:35:58,500 --> 00:35:59,500 Kulhadd tajba ma 'dak? 705 00:35:59,500 --> 00:36:00,720 706 00:36:00,720 --> 00:36:02,320 OK, berred. 707 00:36:02,320 --> 00:36:04,030 Numru 9. 708 00:36:04,030 --> 00:36:05,950 Inti guys jaħdmu fuq dan. 709 00:36:05,950 --> 00:36:09,016 Jien ser jistabbilixxi bord hekk nistgħu tiġbed permezz tiegħu. 710 00:36:09,016 --> 00:36:09,910 Hija ser tkun blast. 711 00:36:09,910 --> 00:36:13,760 712 00:36:13,760 --> 00:36:16,320 It-tabelli kbar jista 'jkun verament scary, I know. 713 00:36:16,320 --> 00:36:19,910 Imma jekk inti biss teħodhom ringiela waħda żmien, huma jiksbu ħafna inqas scary. 714 00:36:19,910 --> 00:38:12,025 715 00:38:12,025 --> 00:38:12,860 Kull dritt. 716 00:38:12,860 --> 00:38:16,230 717 00:38:16,230 --> 00:38:21,190 >> Allura inti taf li dan se jkollu marret permezz prinċipali ewwel, id-dritt? 718 00:38:21,190 --> 00:38:24,140 Initializes xuy u imbagħad tipprova li tpartit lilhom. 719 00:38:24,140 --> 00:38:28,560 Allura anke tpartit huwa ogħla, mod reali li tmur huwa li aħna qed għaddejjin prinċipali, 720 00:38:28,560 --> 00:38:31,040 u allura huwa l-sejħa sa tpartit, id-dritt? 721 00:38:31,040 --> 00:38:32,810 Allura kulħadd jaf li. 722 00:38:32,810 --> 00:38:34,960 >> Allura liema waħda taħseb guys tixtieq li tibda ma? 723 00:38:34,960 --> 00:38:37,240 Huwa xi ħadd verament ċert dwar wieħed minn dawn? 724 00:38:37,240 --> 00:38:38,307 725 00:38:38,307 --> 00:38:39,265 Jew ukoll parzjalment żgur? 726 00:38:39,265 --> 00:38:44,170 727 00:38:44,170 --> 00:38:48,120 Għaliex ma we tibda bil x? 728 00:38:48,120 --> 00:38:49,060 What do naħsbu x hu? 729 00:38:49,060 --> 00:38:49,735 >> UDJENZA: 1. 730 00:38:49,735 --> 00:38:50,360 ZAMYLA Chan: 1. 731 00:38:50,360 --> 00:38:54,500 732 00:38:54,500 --> 00:38:56,340 Mela allura għaliex huwa ta '2. 733 00:38:56,340 --> 00:38:58,880 734 00:38:58,880 --> 00:39:01,380 U dan għaliex l- distinzjoni kbira hawn 735 00:39:01,380 --> 00:39:04,890 hija li aħna biss tgħaddi kopji fil, id-dritt? 736 00:39:04,890 --> 00:39:06,520 Aħna ma tgħaddi b'referenza. 737 00:39:06,520 --> 00:39:08,850 Hekk anke fl-aħħar ta ' dan il-programm xuy 738 00:39:08,850 --> 00:39:14,170 baqgħu l-istess, minħabba li dawn huma biss kopji fil-funzjoni tpartit. 739 00:39:14,170 --> 00:39:16,320 Huma ma attwalment ibiddlu, id-dritt? 740 00:39:16,320 --> 00:39:17,570 741 00:39:17,570 --> 00:39:19,290 >> Allura dak dwar, b, u temperatura? 742 00:39:19,290 --> 00:39:21,540 743 00:39:21,540 --> 00:39:22,890 >> UDJENZA: a huwa b. 744 00:39:22,890 --> 00:39:23,940 >> ZAMYLA Chan: a huwa b. 745 00:39:23,940 --> 00:39:28,569 Allura f'dan il-każ, kien x, li huwa 1, id-dritt? 746 00:39:28,569 --> 00:39:29,860 So here, ejja jimxu permezz ta 'dan. 747 00:39:29,860 --> 00:39:33,940 Allura fil-bidu, au b huma 1 u 2 u undefined. 748 00:39:33,940 --> 00:39:35,000 749 00:39:35,000 --> 00:39:40,850 Allura oriġinarjament temperatura gets assenjati lil, hekk temperatura hija ta '1. 750 00:39:40,850 --> 00:39:46,150 a huwa ugwali għal B, Allura aħna nikseb 2, u b hija ugwali għal temperatura. 751 00:39:46,150 --> 00:39:47,284 Issa irridu jiksbu 1. 752 00:39:47,284 --> 00:39:49,454 753 00:39:49,454 --> 00:39:55,860 >> UDJENZA: Fil-waħda preċedenti biddlu ampersand xuy ampersand. 754 00:39:55,860 --> 00:39:57,390 X'inhuma eżattament jfisser? 755 00:39:57,390 --> 00:39:59,890 ZAMYLA Chan: Allura dan ifisser li int tgħaddi permezz ta 'referenza. 756 00:39:59,890 --> 00:40:03,830 Allura dan ifisser li inti qed attwalment tgħaddi fil-indirizzi ta 'fejn 757 00:40:03,830 --> 00:40:04,814 xuy huma maħżuna. 758 00:40:04,814 --> 00:40:06,730 UDJENZA: Imma int ma iskambji l-indirizz. 759 00:40:06,730 --> 00:40:07,860 ZAMYLA Chan: Int mhux iskambji l-indirizzi. 760 00:40:07,860 --> 00:40:10,015 Inti iskambji x'hemm fi ħdanhom. 761 00:40:10,015 --> 00:40:11,510 762 00:40:11,510 --> 00:40:14,460 Bħal x'hemm f'dak l-indirizz, u hu għalhekk taħdem. 763 00:40:14,460 --> 00:40:20,750 Versus f'dan il-programm hawn liema qed tagħmel huwa int ħolqien kopji. 764 00:40:20,750 --> 00:40:27,440 Allura inti għandek xuy li jeżistu bħala varjabbli tagħhom stess hawn. 765 00:40:27,440 --> 00:40:31,530 766 00:40:31,530 --> 00:40:34,140 Imma mbagħad meta inti tgħaddi tagħhom fiċ tpartit, huwa 767 00:40:34,140 --> 00:40:38,090 kif jekk int ħolqien dan is-sett oħra kollha. 768 00:40:38,090 --> 00:40:41,272 Hekk int qatt ma attwalment x jmissu u y. 769 00:40:41,272 --> 00:40:46,890 >> UDJENZA: Jekk ampersand x huwa dak li huwa l-indirizz ta 'x, dak li istilla x tkun? 770 00:40:46,890 --> 00:40:53,290 >> ZAMYLA Chan: ampersand x huwa x'hemm fuq l-indirizz ta 'x, imbagħad star-- sew, 771 00:40:53,290 --> 00:40:54,950 f'dan il-każ, x mhix pointer. 772 00:40:54,950 --> 00:40:56,332 773 00:40:56,332 --> 00:40:57,040 UDJENZA: Oh, OK. 774 00:40:57,040 --> 00:40:58,998 Allura inti biss tagħmel dan għaliex mhuwiex pointer. 775 00:40:58,998 --> 00:40:59,890 ZAMYLA Chan: Dritt. 776 00:40:59,890 --> 00:41:03,046 Inti tista 'biss tagħmel istilla ta' xi ħaġa li pointer. 777 00:41:03,046 --> 00:41:05,920 Forsi inti tista 'tagħmel dan għal affarijiet li mhumiex, iżda l-jikkompilaw li inti 778 00:41:05,920 --> 00:41:07,350 tagħmel li l-affarijiet crazy jiġri. 779 00:41:07,350 --> 00:41:09,570 U jien mhux eżattament żgur x'jista 'jiġri. 780 00:41:09,570 --> 00:41:11,880 Inti tista 'dejjem tieħu l- indirizz ta 'xi ħaġa, 781 00:41:11,880 --> 00:41:14,255 imma inti ma tistax dereference xi ħaġa li mhux pointer. 782 00:41:14,255 --> 00:41:14,805 783 00:41:14,805 --> 00:41:17,860 Jekk dan jagħmel sens, li l- distinzjoni tajjeb li jkollha. 784 00:41:17,860 --> 00:41:19,870 785 00:41:19,870 --> 00:41:21,340 >> Allura mhux wisq ħażina, right? 786 00:41:21,340 --> 00:41:23,650 It-tabelli huma nisperaw jkollna ftit inqas scary. 787 00:41:23,650 --> 00:41:25,450 788 00:41:25,450 --> 00:41:26,690 Kull dritt. 789 00:41:26,690 --> 00:41:28,370 Ah, dawk gost. 790 00:41:28,370 --> 00:41:31,265 Allura issa, kitba kodiċi tiegħek stess. 791 00:41:31,265 --> 00:41:33,640 792 00:41:33,640 --> 00:41:37,950 Hekk jien ser tavżak guys taħdem fuq dan għal madwar erba 'minuti, 793 00:41:37,950 --> 00:41:41,480 u allura nistgħu nitkellmu dwar modi biex approċċ dan. 794 00:41:41,480 --> 00:41:45,080 795 00:41:45,080 --> 00:41:47,110 Ħossok liberu li tkellem lin-nies ta 'madwarek. 796 00:41:47,110 --> 00:41:48,114 797 00:41:48,114 --> 00:41:49,155 Ukoll dan huwa interessanti. 798 00:41:49,155 --> 00:41:51,460 Huwa bħal bniet kollha taqsima dritt issa. 799 00:41:51,460 --> 00:41:52,190 Pretty eċċitanti. 800 00:41:52,190 --> 00:41:53,310 801 00:41:53,310 --> 00:41:54,502 Ħlief għall Chang. 802 00:41:54,502 --> 00:41:56,190 Iżda Chang mhuwiex verament parti tas-sezzjoni. 803 00:41:56,190 --> 00:42:17,282 804 00:42:17,282 --> 00:42:17,985 Biża. 805 00:42:17,985 --> 00:42:18,485 Perfect. 806 00:42:18,485 --> 00:42:38,059 807 00:42:38,059 --> 00:42:39,475 So I se jtik ideat koppja. 808 00:42:39,475 --> 00:42:43,450 809 00:42:43,450 --> 00:42:46,890 Fil-każ fejn inti għandek karattru aktar minn wieħed, fejn 810 00:42:46,890 --> 00:42:49,990 għandek xi ħaġa oħra bħal 123 jew 1000 xi ħaġa, 811 00:42:49,990 --> 00:42:53,790 inti jeħtieġ li tkun kapaċi li loop permezz ta 'u jikkonvertu kull wieħed minn dawk. 812 00:42:53,790 --> 00:42:55,340 813 00:42:55,340 --> 00:42:58,699 Hekk hemm koppja modi kif inti tista 'tagħmel dan, 814 00:42:58,699 --> 00:43:01,740 imma int definittivament se jkollhom a għal loop x'imkien fil hemm għal-linja 815 00:43:01,740 --> 00:43:05,150 permezz tagħhom, li hija tip ta bħall-giveaway 816 00:43:05,150 --> 00:43:09,540 ma anki jekk inti sejħa strlen, li huwa tip ta 'bħal oh 817 00:43:09,540 --> 00:43:12,418 forsi inti tixtieq li tuża l-tul tas-sekwenza b'xi mod. 818 00:43:12,418 --> 00:45:17,300 819 00:45:17,300 --> 00:45:17,829 >> Kull dritt. 820 00:45:17,829 --> 00:45:20,870 Mela xi do you guys think jista 'jkun wieħed mill-ewwel affarijiet li rridu nagħmlu? 821 00:45:20,870 --> 00:45:23,149 822 00:45:23,149 --> 00:45:25,690 Hemm każijiet koppja fil hawn għandna bżonn li jagħtu kont għall, right? 823 00:45:25,690 --> 00:45:27,360 Jew għandna xi ħaġa li null. 824 00:45:27,360 --> 00:45:28,685 825 00:45:28,685 --> 00:45:30,383 What do għandna? 826 00:45:30,383 --> 00:45:30,882 Każijiet. 827 00:45:30,882 --> 00:45:32,760 828 00:45:32,760 --> 00:45:33,260 Null. 829 00:45:33,260 --> 00:45:34,400 830 00:45:34,400 --> 00:45:42,414 Aħna għandna l-każ li hija għandha xi ħaġa oħra għajr 09, id-dritt? 831 00:45:42,414 --> 00:45:43,580 Mela ejja ngħidu li għandha ittri. 832 00:45:43,580 --> 00:45:44,900 833 00:45:44,900 --> 00:45:46,510 Jew aħna għandna l-każ li l-valida. 834 00:45:46,510 --> 00:45:48,450 835 00:45:48,450 --> 00:45:50,130 Tliet każijiet biex jaħsbu. 836 00:45:50,130 --> 00:45:53,527 Allura liema waħda taħseb jista 'jkun l-eħfef waħda biex jieħu kura ta l-ewwel? 837 00:45:53,527 --> 00:45:54,152 UDJENZA: Null. 838 00:45:54,152 --> 00:45:55,527 ZAMYLA Chan: Il-każ huwa null. 839 00:45:55,527 --> 00:45:56,610 Allura dak li nagħmlu hemm? 840 00:45:56,610 --> 00:45:57,954 841 00:45:57,954 --> 00:45:58,870 UDJENZA: [inaudible]. 842 00:45:58,870 --> 00:46:02,434 843 00:46:02,434 --> 00:46:03,184 ZAMYLA Chan: Yeah. 844 00:46:03,184 --> 00:46:05,140 845 00:46:05,140 --> 00:46:06,550 U What do I trid tagħmel? 846 00:46:06,550 --> 00:46:07,341 >> UDJENZA: Ritorn 0. 847 00:46:07,341 --> 00:46:07,935 848 00:46:07,935 --> 00:46:09,110 >> ZAMYLA Chan: Eżattament. 849 00:46:09,110 --> 00:46:09,860 Biża. 850 00:46:09,860 --> 00:46:10,640 OK. 851 00:46:10,640 --> 00:46:15,270 Allura issa każ li hija għandha l-ittri u l-każ li huwa validu. 852 00:46:15,270 --> 00:46:19,140 Nistgħu ngħidu tieħu kura ta 'dan fi loop wieħed, OK? 853 00:46:19,140 --> 00:46:22,710 Allura mod wieħed biex tagħmel it-- x'jista 'jkun mod sempliċi biex jiċċekkjaw jekk huwa validu. 854 00:46:22,710 --> 00:46:25,150 855 00:46:25,150 --> 00:46:29,144 Rridu naraw li jgħaddu kull ittra u jagħmlu dak? 856 00:46:29,144 --> 00:46:34,336 857 00:46:34,336 --> 00:46:35,640 >> UDJENZA: Iċċekkja jekk huwa in-- 858 00:46:35,640 --> 00:46:39,570 >> ZAMYLA Chan: Dritt, inti tista 'check jekk din tkun bejn 0 u 9, id-dritt? 859 00:46:39,570 --> 00:46:40,880 860 00:46:40,880 --> 00:46:42,700 U mbagħad fil-każ li huwa validu, aħna qed 861 00:46:42,700 --> 00:46:46,550 ser jispiċċaw mtennija permezz string tagħna anyways, id-dritt? 862 00:46:46,550 --> 00:46:48,690 Allura għaliex ma nippruvaw u jikkombinaw f'att wieħed. 863 00:46:48,690 --> 00:46:51,260 Aħna qed tmur biex jtenni permezz string out, u kif aħna 864 00:46:51,260 --> 00:46:56,400 tagħmel dan, aħna qed tmur biex l-ewwel tagħmel verifika biex tara jekk din l-ittra 865 00:46:56,400 --> 00:46:58,110 jew jekk dan il-karattru huwa validu. 866 00:46:58,110 --> 00:47:02,150 Jekk huwa, aħna qed tmur biex iwettqu l- operazzjoni li għandna bżonn sabiex jissarfu. 867 00:47:02,150 --> 00:47:05,050 Inkella dan ser jirritorna 0, id-dritt? 868 00:47:05,050 --> 00:47:09,160 >> Allura qabel nagħmlu dan, aħna probabbilment jridu xi varjabbli 869 00:47:09,160 --> 00:47:12,820 li nistgħu ritorn fl-aħħar li għaddej biex jkun il-valur attwali tagħna. 870 00:47:12,820 --> 00:47:17,005 Allura aħna qed tmur biex initialize xi valur li jkun 0. 871 00:47:17,005 --> 00:47:18,390 U dan huwa biss kif aħna tibda. 872 00:47:18,390 --> 00:47:22,452 873 00:47:22,452 --> 00:47:23,785 Hekk jien ser teħles minn dan. 874 00:47:23,785 --> 00:47:26,750 875 00:47:26,750 --> 00:47:30,489 Allura kif huma aħna se jtenni permezz ta 'dan string. 876 00:47:30,489 --> 00:47:31,280 UDJENZA: Għal loop. 877 00:47:31,280 --> 00:47:32,280 ZAMYLA Chan: A għal loop. 878 00:47:32,280 --> 00:47:33,160 Allura x'hemm għall tagħna? 879 00:47:33,160 --> 00:47:34,710 880 00:47:34,710 --> 00:47:35,909 >> UDJENZA: i huwa 0. 881 00:47:35,909 --> 00:47:36,700 ZAMYLA Chan: Mm-hm. 882 00:47:36,700 --> 00:47:38,620 883 00:47:38,620 --> 00:47:41,180 U liema huma aħna iterazzjoni sakemm? 884 00:47:41,180 --> 00:47:42,450 >> UDJENZA: tul str ta 'i. 885 00:47:42,450 --> 00:47:47,920 886 00:47:47,920 --> 00:47:50,900 >> ZAMYLA Chan: OK, issa ftakar hemm mod aħjar. [Inaudible]. 887 00:47:50,900 --> 00:47:52,935 >> UDJENZA: Yeah, nistgħu nagħmlu n ugwali. 888 00:47:52,935 --> 00:47:53,810 ZAMYLA Chan: Eżattament. 889 00:47:53,810 --> 00:47:55,010 890 00:47:55,010 --> 00:47:56,190 >> UDJENZA: i huwa inqas minn n. 891 00:47:56,190 --> 00:47:57,559 892 00:47:57,559 --> 00:47:59,475 ZAMYLA Chan: U għaliex kieku rridu nagħmlu dan? 893 00:47:59,475 --> 00:48:00,815 894 00:48:00,815 --> 00:48:01,940 Do you remember-raġuni? 895 00:48:01,940 --> 00:48:04,180 896 00:48:04,180 --> 00:48:05,680 UDJENZA: Irridu terġa 'tikkalkula dan. 897 00:48:05,680 --> 00:48:08,735 ZAMYLA Chan: Becasue dan il-mod inti biss għandhom jikkalkolaw strlen darba. 898 00:48:08,735 --> 00:48:09,750 899 00:48:09,750 --> 00:48:14,400 Jekk inti do i huwa inqas minn strlen i, li jfisser li tirrikalkola 900 00:48:14,400 --> 00:48:17,050 it-tul kull darba inti tmexxi l għal loop, 901 00:48:17,050 --> 00:48:20,800 li mhux spiża enormi ta 'l-enerġija, imma hija 902 00:48:20,800 --> 00:48:24,280 prattika aħjar biex jippruvaw u tagħmel affarijiet bħal dik darba. 903 00:48:24,280 --> 00:48:27,610 Sakemm forsi inti għandek string crazy thats jinbidlu f'kull iterazzjoni. 904 00:48:27,610 --> 00:48:30,371 Imma jekk huwa joqogħdu l-istess, isalvawh. 905 00:48:30,371 --> 00:48:30,870 Kull dritt. 906 00:48:30,870 --> 00:48:33,430 U mbagħad I plus plus. 907 00:48:33,430 --> 00:48:34,040 Biża. 908 00:48:34,040 --> 00:48:35,789 Aħna dwar mod tagħna. 909 00:48:35,789 --> 00:48:36,830 UDJENZA: Really malajr. 910 00:48:36,830 --> 00:48:39,600 L-ewwel, hekk ejja ngħidu aħna biss Did I inqas minn strlen ta 'i, 911 00:48:39,600 --> 00:48:42,175 dawn huma gradazzjoni magħna dwar id-disinn fil-livelli kollha jew biss korrettezza? 912 00:48:42,175 --> 00:48:43,640 913 00:48:43,640 --> 00:48:44,610 Dawn mhux qed. 914 00:48:44,610 --> 00:48:47,920 Aħna gradazzjoni fuq korrettezza għal kwizzijiet safejn naf. 915 00:48:47,920 --> 00:48:52,670 I ma tista 'tagħmel fuq full garanzija, iżda għall-parti l-kbira, 916 00:48:52,670 --> 00:48:57,060 maġġoranza vasta huwa korrettezza, għaliex int taħt ħafna restrizzjoni ta 'żmien. 917 00:48:57,060 --> 00:48:59,704 Disinn tipikament ifisser ikollok ħin biex jaħsbu 918 00:48:59,704 --> 00:49:01,245 dwar il-eleganti ta 'sitwazzjoni tiegħek. 919 00:49:01,245 --> 00:49:03,710 920 00:49:03,710 --> 00:49:05,770 >> OK, hekk aħna qed jiġu mtennija permezz. 921 00:49:05,770 --> 00:49:10,640 Għalhekk għandna bżonn li jew tikkontrolla biex tara jekk dan il-karattru huwa validu 922 00:49:10,640 --> 00:49:14,550 jew jekk nistgħu jwettaq tagħna normali [? a biex i?] funzjoni. 923 00:49:14,550 --> 00:49:16,600 Nistgħu joqogħdu jinkwetaw dwar dak li huwa fit-tieni. 924 00:49:16,600 --> 00:49:19,340 Allura għaliex ma we take-- jekk xi ħadd jistgħu jaħsbu 925 00:49:19,340 --> 00:49:21,930 dwar mod biex jiċċekkjaw li tara jekk dan huwa validu. 926 00:49:21,930 --> 00:49:23,346 927 00:49:23,346 --> 00:49:25,740 Aħna nafu li għaddej biex tkun xi jekk il-kundizzjoni, id-dritt? 928 00:49:25,740 --> 00:49:26,830 929 00:49:26,830 --> 00:49:32,300 U ftakar dan huwa fil ASCII, hekk kif jista 930 00:49:32,300 --> 00:49:37,359 naraw jekk mhuwiex 0,1, 2, 3, 4, 5, 6, 7, 8, jew 9. 931 00:49:37,359 --> 00:49:38,150 UDJENZA: Jekk alpha. 932 00:49:38,150 --> 00:49:39,800 933 00:49:39,800 --> 00:49:44,100 >> ZAMYLA Chan: Mela jekk alpha kieku biss let us know jekk huwa ittra. 934 00:49:44,100 --> 00:49:47,810 U jekk dawn tagħtina simbolu, huwa xorta ma pjuttost tmur biex jiċċekkjaw. 935 00:49:47,810 --> 00:49:54,270 Mela jekk inti pull up ASCII tiegħek tabella, nafu li 0 sa 9 936 00:49:54,270 --> 00:49:55,340 huma fil-segment wieħed. 937 00:49:55,340 --> 00:49:57,560 938 00:49:57,560 --> 00:50:00,540 Tell me-numri li huma jikkorrispondu għal jekk possibbli. 939 00:50:00,540 --> 00:50:08,136 940 00:50:08,136 --> 00:50:08,677 UDJENZA: 40. 941 00:50:08,677 --> 00:50:11,440 942 00:50:11,440 --> 00:50:13,714 >> ZAMYLA Chan: Allura l-firxa hija simili 40-- 943 00:50:13,714 --> 00:50:14,380 UDJENZA: Forsi. 944 00:50:14,380 --> 00:50:16,110 945 00:50:16,110 --> 00:50:16,765 48-57. 946 00:50:16,765 --> 00:50:17,430 M'inix ċert. 947 00:50:17,430 --> 00:50:18,510 >> ZAMYLA Chan: 40-57? 948 00:50:18,510 --> 00:50:19,426 >> UDJENZA: 48, I think. 949 00:50:19,426 --> 00:50:20,730 ZAMYLA Chan: 48-57. 950 00:50:20,730 --> 00:50:26,070 Allura aħna nafu li dawk ASCII symbols-- jekk il-valur ASCII huwa ma 951 00:50:26,070 --> 00:50:29,940 bejn 48 u 57, mhuwiex validu, id-dritt? 952 00:50:29,940 --> 00:50:32,050 Allura nistgħu użu li vantaġġ tagħna possibilment? 953 00:50:32,050 --> 00:50:33,770 954 00:50:33,770 --> 00:50:38,082 Kif aħna se tikseb din l-ittra, l-ewwel off? 955 00:50:38,082 --> 00:50:40,910 Kif aħna huma aċċess dan dan il-karattru? 956 00:50:40,910 --> 00:50:42,010 >> UDJENZA: s bracket i. 957 00:50:42,010 --> 00:50:42,801 >> ZAMYLA Chan: Mm-hm. 958 00:50:42,801 --> 00:50:43,790 959 00:50:43,790 --> 00:50:46,285 Għaliex aħna tista 'taħseb kordi bħal arrays, ftakar. 960 00:50:46,285 --> 00:50:47,470 961 00:50:47,470 --> 00:50:48,740 Allura dak do irridu ngħidu? 962 00:50:48,740 --> 00:50:55,920 Aħna rridu li jgħidu jekk dan is-- I ser jagħtuk ħjiel. 963 00:50:55,920 --> 00:50:56,920 Huwa inqas minn. 964 00:50:56,920 --> 00:50:58,711 X'għandek taħseb li jeħtieġ li jkun anqas minn? 965 00:50:58,711 --> 00:50:59,074 966 00:50:59,074 --> 00:50:59,615 UDJENZA: 57? 967 00:50:59,615 --> 00:51:01,550 968 00:51:01,550 --> 00:51:02,900 >> ZAMYLA Chan: 47, id-dritt? 969 00:51:02,900 --> 00:51:08,920 Iżda jirrappreżenta wkoll li bħala inti 0 fl uniku [? imagħżel?], għaliex dan huwa 970 00:51:08,920 --> 00:51:09,689 il-karattru 0. 971 00:51:09,689 --> 00:51:10,605 Inti tista 'wkoll tpoġġi 47. 972 00:51:10,605 --> 00:51:11,660 973 00:51:11,660 --> 00:51:14,350 Wara li t-tabella ASCII, bħal tara, huwa biss xi ħaġa 974 00:51:14,350 --> 00:51:18,580 inti għandu jkollhom fuq folja kwizz tiegħek. 975 00:51:18,580 --> 00:51:25,830 >> Hekk jekk dan huwa l-każ, jekk huwa inqas minn 0-- mhux neċessarjament u. 976 00:51:25,830 --> 00:51:30,890 Huwa biss jew se tkun inqas minn jew akbar minn 9. 977 00:51:30,890 --> 00:51:33,055 Allura tista 'timla out dan l-aħħar għalija? 978 00:51:33,055 --> 00:51:36,440 Hekk jew i ta 'I huwa dak, Rhea? 979 00:51:36,440 --> 00:51:39,810 980 00:51:39,810 --> 00:51:41,536 >> UDJENZA: Aktar minn 9. 981 00:51:41,536 --> 00:51:42,970 982 00:51:42,970 --> 00:51:44,221 >> ZAMYLA Chan: Hemm. 983 00:51:44,221 --> 00:51:47,280 Ma li jagħmel sens li kulħadd, kif sirna hemmhekk? 984 00:51:47,280 --> 00:51:51,340 Dawn il-problemi, dawn qed simili ladarba inti tara l-soluzzjonijiet, huwa simili oh, OK. 985 00:51:51,340 --> 00:51:52,312 986 00:51:52,312 --> 00:51:53,937 U dan huwa għaliex il-prattika se jgħinek. 987 00:51:53,937 --> 00:51:55,070 988 00:51:55,070 --> 00:51:57,400 OK, hekk aħna ritorn 0. 989 00:51:57,400 --> 00:51:57,900 Sabiħ. 990 00:51:57,900 --> 00:51:59,000 991 00:51:59,000 --> 00:51:59,670 Kull dritt. 992 00:51:59,670 --> 00:52:00,780 993 00:52:00,780 --> 00:52:02,365 Inkella dak li rridu nagħmlu? 994 00:52:02,365 --> 00:52:04,640 Dan huwa l-parti interessanti fejn huwa ftit aktar 995 00:52:04,640 --> 00:52:07,550 bħal matematika versus CS fl-opinjoni tiegħi. 996 00:52:07,550 --> 00:52:09,479 997 00:52:09,479 --> 00:52:11,520 Ħadd ma jkollu idea ta 'kif nistgħu nagħmlu dan? 998 00:52:11,520 --> 00:52:15,822 999 00:52:15,822 --> 00:52:18,155 Allura l-ħaġa importanti li jirrealizzaw hija l-ewwel karattru 1000 00:52:18,155 --> 00:52:21,510 aħna qed tieħu se tkun l-ogħla ċifri ordni, id-dritt? 1001 00:52:21,510 --> 00:52:25,975 Mela jekk aħna qed tħares lejn konverżjoni 123, l-ewwel darba aħna jtenni 1002 00:52:25,975 --> 00:52:30,800 huwa ser tkun l-1, iżda għandna bżonn li tkun 100 sa l-aħħar, id-dritt? 1003 00:52:30,800 --> 00:52:34,450 Allura ħaġa waħda li tista 'tagħmel huwa li ma 'kull ċifri sussegwenti 1004 00:52:34,450 --> 00:52:39,670 tieħu, inti immoltiplika valur tiegħek b'10, hekk li mill-ħin li inti jilħqu t-tmiem, 1005 00:52:39,670 --> 00:52:42,960 kollox kien shifted il fuq, id-dritt? 1006 00:52:42,960 --> 00:52:46,490 >> Allura l-ewwel darba inti tmexxi dan, inti għandek 1 bħala l-valur tiegħek. 1007 00:52:46,490 --> 00:52:50,370 Tieni darba inti tmexxi dan, inti immoltiplika valur tiegħek b'10. 1008 00:52:50,370 --> 00:52:55,180 Hija se taġġorna hekk li huwa issa 10, u inti żid fuq il-valur li jmiss tiegħek. 1009 00:52:55,180 --> 00:52:57,830 U allura inti timmultiplika din mill 10 u żid fuq il-valur li jmiss tiegħek. 1010 00:52:57,830 --> 00:53:01,880 U dan huwa għaliex dawn jgħidu dan huwa ferm aktar simili ittestjar 1011 00:53:01,880 --> 00:53:06,920 algoritmu matematika versus CS, imma I digress. 1012 00:53:06,920 --> 00:53:08,080 I ma jiktbu l-kwiżż. 1013 00:53:08,080 --> 00:53:13,520 >> Allura ħaġa waħda li nistgħu nagħmlu huwa aħna jgħidu ħinijiet valur ugwali għal 10. 1014 00:53:13,520 --> 00:53:16,630 Allura dan se ċċaqlaq ċifri tiegħek darba kull darba. 1015 00:53:16,630 --> 00:53:18,770 1016 00:53:18,770 --> 00:53:20,915 U allura aħna biss tixtieq iżżid. 1017 00:53:20,915 --> 00:53:22,070 1018 00:53:22,070 --> 00:53:24,290 Aħna tixtieq iżżid fil dak aħna biss ltqajna, id-dritt? 1019 00:53:24,290 --> 00:53:25,350 1020 00:53:25,350 --> 00:53:31,649 Allura kif nistgħu attwalment jikkonvertu tagħna Karattru ASCII fil-numru 1021 00:53:31,649 --> 00:53:32,440 li jirrappreżenta? 1022 00:53:32,440 --> 00:53:37,680 1023 00:53:37,680 --> 00:53:40,800 >> Allura aħna nafu li 0 hija ugwali għal 47, id-dritt? 1024 00:53:40,800 --> 00:53:44,260 Hekk jekk 0 huwa 47, dak kieku għandna nagħmlu lilha 1025 00:53:44,260 --> 00:53:47,376 li attwalment jagħmlu dan tkun int 0? 1026 00:53:47,376 --> 00:53:48,384 >> UDJENZA: Huwa 48. 1027 00:53:48,384 --> 00:53:49,050 ZAMYLA Chan: 48? 1028 00:53:49,050 --> 00:53:49,550 Jiddispjacini. 1029 00:53:49,550 --> 00:53:53,500 1030 00:53:53,500 --> 00:53:55,100 Nixtiequ naqqas 48, id-dritt? 1031 00:53:55,100 --> 00:53:58,580 1032 00:53:58,580 --> 00:53:59,550 Ftakar matematika ASCII? 1033 00:53:59,550 --> 00:54:01,565 Nistgħu jittrattawhom biss bħal numri normali. 1034 00:54:01,565 --> 00:54:02,570 1035 00:54:02,570 --> 00:54:05,900 Jekk inti jittrattawhom bħal numri, dawn isiru numri effettiv. 1036 00:54:05,900 --> 00:54:10,410 Hekk jekk ikollna s 'I, li ejja jgħidu f'dan il-każ hija ugwali għal 0. 1037 00:54:10,410 --> 00:54:14,420 Allura s ta 'i f'dan il-każ ikun l-ASCII-- 1038 00:54:14,420 --> 00:54:16,675 l-int ASCII għaliha jkun 47. 1039 00:54:16,675 --> 00:54:17,750 1040 00:54:17,750 --> 00:54:19,875 Allura nistgħu subtract-- jew 48. 1041 00:54:19,875 --> 00:54:20,930 1042 00:54:20,930 --> 00:54:22,440 Inti tista 'tagħmel dan, huwa mod wieħed. 1043 00:54:22,440 --> 00:54:25,125 Ħadd ma jaf aħjar mod nistgħu nagħmlu 48? 1044 00:54:25,125 --> 00:54:27,220 1045 00:54:27,220 --> 00:54:31,608 Aħna biss qal 0 is-- jmorru fil l-ASCII inti tista 'tagħmel kwotazzjoni 0. 1046 00:54:31,608 --> 00:54:39,740 1047 00:54:39,740 --> 00:54:43,160 Allura ma dan it-tip ta 'jagħmel sens kif taħdem din? 1048 00:54:43,160 --> 00:54:50,080 >> UDJENZA: Fuq dan il-punt, huwa l-valur 0 għaliex anki jekk inti immoltiplika lilha mill 10, 1049 00:54:50,080 --> 00:54:53,340 int bdew ma 'żero, għalhekk għandu jiġi mixgħul? 1050 00:54:53,340 --> 00:54:59,360 >> ZAMYLA Chan: Allura f'dan il-każ, inti tixtieq li jimmultiplikaw qabel inti żid, 1051 00:54:59,360 --> 00:55:06,650 għaliex f'dan il-każ, iva, ikun xorta be-- pointer tiegħi hija nieqsa. 1052 00:55:06,650 --> 00:55:09,980 Il-valur f'dan il-każ, l-ewwel iż-żmien aħna run se jkun żero. 1053 00:55:09,980 --> 00:55:12,320 Allura int żżid biss fuq dik ewwel ċifra. 1054 00:55:12,320 --> 00:55:15,930 X'hemm importanti huwa l-ħin li jmiss inti jtenni, inti tixtieq li ċċaqlaq it up 1055 00:55:15,930 --> 00:55:18,722 qabel ma inti żid ċifri jmiss tiegħek fuq. 1056 00:55:18,722 --> 00:55:21,223 Does li tiċċara għalik? 1057 00:55:21,223 --> 00:55:21,723 OK. 1058 00:55:21,723 --> 00:55:23,050 1059 00:55:23,050 --> 00:55:25,900 >> Kultant int ser nikseb stramb affarijiet mathy aktar. 1060 00:55:25,900 --> 00:55:28,020 1061 00:55:28,020 --> 00:55:30,750 Jekk kellek aktar ta ' dan, int xorta ser 1062 00:55:30,750 --> 00:55:32,610 li get-- int ser tagħmel pretty ukoll. 1063 00:55:32,610 --> 00:55:35,150 Kreditu parzjali hija ħafna ħaġa big fuq kwizzijiet CS50. 1064 00:55:35,150 --> 00:55:36,270 Allura jiktbu dak li taf. 1065 00:55:36,270 --> 00:55:39,640 Jekk inti ltqajna kollox ħlief għall-hawn, int 1066 00:55:39,640 --> 00:55:41,390 xorta se jagħmlu verament tajjeb il-problema. 1067 00:55:41,390 --> 00:55:43,750 Għax int turi, OK, I kważi know. 1068 00:55:43,750 --> 00:55:45,570 Naf li għandi bżonn biex jtenni permezz. 1069 00:55:45,570 --> 00:55:47,260 Naf dak I bżonn li jiċċekkja għal. 1070 00:55:47,260 --> 00:55:50,584 I biss ma pjuttost nikseb kif jikkonvertu lilha. 1071 00:55:50,584 --> 00:55:51,500 Inti qed tmur biex tkun OK. 1072 00:55:51,500 --> 00:55:52,850 Iva, int ser jitilfu punti koppja, 1073 00:55:52,850 --> 00:55:55,641 imma int xorta se tikseb numru tajjeb ta 'punti għal xi ħaġa 1074 00:55:55,641 --> 00:55:57,990 bħal li jekk int nieqsa dawn iż-żewġ linji. 1075 00:55:57,990 --> 00:56:00,660 Inkun bħal OK, din il-persuna jaf dak li qed isir. 1076 00:56:00,660 --> 00:56:02,070 Matematika hija iebsa. 1077 00:56:02,070 --> 00:56:04,930 Allura nixtieq ngħid youd tkun multa. 1078 00:56:04,930 --> 00:56:09,474 >> OK, sabiex inti guys lesti li ipprova strlen ma pointers issa 1079 00:56:09,474 --> 00:56:10,890 li inti guys huma kaptani pointer? 1080 00:56:10,890 --> 00:56:12,400 1081 00:56:12,400 --> 00:56:15,106 So I ser tavżak guys jaħdmu fuq li għal ftit. 1082 00:56:15,106 --> 00:56:17,131 1083 00:56:17,131 --> 00:56:19,090 Jekk xi ħadd teħtieġ aġġornament. 1084 00:56:19,090 --> 00:56:23,120 1085 00:56:23,120 --> 00:56:28,060 Allura inti tixtieq li tuża pointer aritmetika, u mbagħad jekk i huwa null, 1086 00:56:28,060 --> 00:56:29,624 implimentazzjoni tiegħek għandhom jirritornaw 0. 1087 00:56:29,624 --> 00:56:37,045 1088 00:56:37,045 --> 00:56:39,670 Affarijiet bħal dan li tagħmel inti verament kuntenta li biss sejħa strlen 1089 00:56:39,670 --> 00:56:40,586 fl-aħħar tal-ġurnata. 1090 00:56:40,586 --> 00:57:24,874 1091 00:57:24,874 --> 00:57:27,624 Naħseb li dan wieħed jista 'jkun ftit aktar faċli minn l-aħħar wieħed, li 1092 00:57:27,624 --> 00:57:28,123 hija tajba. 1093 00:57:28,123 --> 00:58:51,789 1094 00:58:51,789 --> 00:58:55,690 I ser jagħtuk guys ieħor minuta, u allura aħna ser naħdmu permezz ta 'dan. 1095 00:58:55,690 --> 00:58:56,896 1096 00:58:56,896 --> 00:58:58,320 U allura aħna nikseb biex tmur switches. 1097 00:58:58,320 --> 00:59:32,480 1098 00:59:32,480 --> 00:59:34,660 >> OK, guys lesti? 1099 00:59:34,660 --> 00:59:35,790 1100 00:59:35,790 --> 00:59:37,420 Forsi ftit. 1101 00:59:37,420 --> 00:59:40,210 Hekk stajt tak tiegħek żewġ għażliet, id-dritt? 1102 00:59:40,210 --> 00:59:45,810 Jew jiċċekkjaw għall null u r-ritorn 0 jekk huwa, jew attwalment jikkomputa-tul. 1103 00:59:45,810 --> 00:59:48,220 Hekk li trid tikteb jiċċekkja għal null? 1104 00:59:48,220 --> 00:59:50,100 1105 00:59:50,100 --> 00:59:51,790 Mur għaliha. 1106 00:59:51,790 --> 00:59:56,460 >> UDJENZA: Jekk parentesi s ugwali ugwali ritorn null 0. 1107 00:59:56,460 --> 00:59:57,342 1108 00:59:57,342 --> 00:59:58,175 ZAMYLA Chan: sabiħ. 1109 00:59:58,175 --> 00:59:59,350 1110 00:59:59,350 --> 01:00:02,320 I love meta nofs il-problema tiegħek huwa biss verifika għall null. 1111 01:00:02,320 --> 01:00:04,820 Naf miegħek guys aħħar ġimgħa I kien simili ċekk null 1112 01:00:04,820 --> 01:00:06,630 litteralment kull darba. 1113 01:00:06,630 --> 01:00:07,510 OK, so-- 1114 01:00:07,510 --> 01:00:08,716 1115 01:00:08,716 --> 01:00:12,750 >> UDJENZA: Jekk ritorn 0 hija linja waħda biss, do għad għandna bżonn l-bracket kaboċċi? 1116 01:00:12,750 --> 01:00:15,860 >> ZAMYLA Chan: Inti ma teknikament jeħtiġuhom sakemm int konsistenti. 1117 01:00:15,860 --> 01:00:19,240 Huwa prattika tajba biss biex jiksbu fil-drawwa 1118 01:00:19,240 --> 01:00:21,650 ta 'użu ċingi kaboċċi, iżda teknikament ebda. 1119 01:00:21,650 --> 01:00:23,320 Inti ma għandekx bżonn minnhom għal linja waħda. 1120 01:00:23,320 --> 01:00:26,030 Aħna biss tendenza li jirrakkomanda dan għall-persuni jibdew programm. 1121 01:00:26,030 --> 01:00:27,740 1122 01:00:27,740 --> 01:00:30,450 >> Allura issa dak li jista rridu nagħmlu hawn? 1123 01:00:30,450 --> 01:00:32,222 Allura issa nafu li string tagħna huwa validu. 1124 01:00:32,222 --> 01:00:33,680 Aħna rridu li jżommu jikkomputa-tul. 1125 01:00:33,680 --> 01:00:35,620 X'hemm probabbilment l-ewwel ħaġa li rridu nagħmlu? 1126 01:00:35,620 --> 01:00:38,770 1127 01:00:38,770 --> 01:00:41,276 >> UDJENZA: Oħloq int dak l-tul. 1128 01:00:41,276 --> 01:00:42,150 ZAMYLA Chan: Eżattament. 1129 01:00:42,150 --> 01:00:43,450 UDJENZA: U aħna rridu li tistabbilixxi li? 1130 01:00:43,450 --> 01:00:44,210 ZAMYLA Chan: 0. 1131 01:00:44,210 --> 01:00:44,710 Perfect. 1132 01:00:44,710 --> 01:00:46,050 1133 01:00:46,050 --> 01:00:47,290 Kull dritt. 1134 01:00:47,290 --> 01:00:48,750 Issa dak do trid tagħmel? 1135 01:00:48,750 --> 01:00:50,000 Dan huwa verament il-massa ta 'dan. 1136 01:00:50,000 --> 01:00:50,890 Mur għaliha. 1137 01:00:50,890 --> 01:00:54,370 >> UDJENZA: Allura inti probabilment tagħmel għall loop. 1138 01:00:54,370 --> 01:01:03,150 U allura peress meta inti sejħa s int jkollna l-indirizz ta 'l-ewwel ħaġa, 1139 01:01:03,150 --> 01:01:05,660 inti tibda bil i ikun egwali għal 0. 1140 01:01:05,660 --> 01:01:07,980 1141 01:01:07,980 --> 01:01:15,755 U mbagħad sakemm x plus i mhuwiex lura mmejla 0. 1142 01:01:15,755 --> 01:01:17,130 ZAMYLA Chan: Il-terminatur null. 1143 01:01:17,130 --> 01:01:18,380 UDJENZA: Il-terminatur null. 1144 01:01:18,380 --> 01:01:18,890 1145 01:01:18,890 --> 01:01:21,088 Imbagħad inti żid waħda għat-tul. 1146 01:01:21,088 --> 01:01:22,372 >> ZAMYLA Chan: Yeah. 1147 01:01:22,372 --> 01:01:25,940 OK, sabiex tikri dawran li f'Kodiċi konkreti ħafna. 1148 01:01:25,940 --> 01:01:27,537 Iżda dan huwa l-idea perfetta. 1149 01:01:27,537 --> 01:01:28,870 Dan huwa eżattament dak li aħna qed tagħmel. 1150 01:01:28,870 --> 01:01:31,910 Aħna qed tmur biex tkun mtennija permezz ta 'ma' l-pointer. 1151 01:01:31,910 --> 01:01:34,590 Allura dak li rridu nagħmlu huwa minflok int 1152 01:01:34,590 --> 01:01:36,660 hawnhekk, għaliex aħna qed ma jirreferu għal dan. 1153 01:01:36,660 --> 01:01:42,390 Aħna qed jirreferu għall-bidu ta ' string, li jibdew jiġu xi indirizz, 1154 01:01:42,390 --> 01:01:43,300 dritt? 1155 01:01:43,300 --> 01:01:44,600 >> Hekk irridu pointer. 1156 01:01:44,600 --> 01:01:47,610 1157 01:01:47,610 --> 01:01:52,310 Allura aħna qed tmur biex ikollhom xi star char, għaliex dan ikun jikkorrispondi għal i tagħna, id-dritt? 1158 01:01:52,310 --> 01:01:57,270 Allura dan huwa f'xi punt aħna qed initializing il-bidu tas-sekwenza, OK? 1159 01:01:57,270 --> 01:01:58,949 Mela ejja biss sejħa hija i. 1160 01:01:58,949 --> 01:02:01,740 Jekk huwa l-bidu tas-sekwenza, x'inhu għaddej li għandu jiġi assenjat għall-? 1161 01:02:01,740 --> 01:02:03,690 1162 01:02:03,690 --> 01:02:04,530 Mhux 0. 1163 01:02:04,530 --> 01:02:06,238 Aħna tixtieq li jkun il- bidu ta 'spag tagħna. 1164 01:02:06,238 --> 01:02:07,170 1165 01:02:07,170 --> 01:02:09,960 Liema jirrappreżenta l-bidu ta ' string tagħna li kien mogħti lilna? 1166 01:02:09,960 --> 01:02:10,800 >> UDJENZA: Just s. 1167 01:02:10,800 --> 01:02:11,425 >> ZAMYLA Chan: s. 1168 01:02:11,425 --> 01:02:13,070 1169 01:02:13,070 --> 01:02:17,890 Allura dan joħloq xi pointer ġdida li tirrappreżenta l-bidu ta 'spag tagħna, OK? 1170 01:02:17,890 --> 01:02:19,430 1171 01:02:19,430 --> 01:02:22,777 Mod ieħor biex jaħsbu li huwa simili hawnhekk firxa tagħna. 1172 01:02:22,777 --> 01:02:26,690 C'est string tagħna, i. 1173 01:02:26,690 --> 01:02:28,650 1174 01:02:28,650 --> 01:02:32,400 Mela ejja ngħidu li dan huwa l- ewwel post, u dan huwa 0x4. 1175 01:02:32,400 --> 01:02:34,400 1176 01:02:34,400 --> 01:02:34,900 04. 1177 01:02:34,900 --> 01:02:36,330 1178 01:02:36,330 --> 01:02:38,535 Dan huwa s tagħna, li żżomm dak l-indirizz. 1179 01:02:38,535 --> 01:02:39,810 1180 01:02:39,810 --> 01:02:45,960 U aħna biss maħluqa xulxin msejħa i li biss tirreferi għall-istess ħaġa. 1181 01:02:45,960 --> 01:02:49,437 Allura dawn qed kemm biss tipponta il-bidu ta 'sekwenza tagħna. 1182 01:02:49,437 --> 01:02:51,020 Din hija biss rappreżentazzjoni grafika. 1183 01:02:51,020 --> 01:02:53,830 1184 01:02:53,830 --> 01:02:57,100 >> Allura issa dak li rridu tagħmel huwa li rridu jtenni 1185 01:02:57,100 --> 01:03:02,040 kondizzjoni tagħna għall mtennija permezz string tagħna. 1186 01:03:02,040 --> 01:03:02,920 Issa shopping. 1187 01:03:02,920 --> 01:03:04,150 Ltqajna biex shop, guys. 1188 01:03:04,150 --> 01:03:06,290 1189 01:03:06,290 --> 01:03:12,390 Huwa irridu li jżomm aġġornament sakemm nilħqu l-terminatur null, id-dritt? 1190 01:03:12,390 --> 01:03:14,930 Allura dak li jista 'li look like? 1191 01:03:14,930 --> 01:03:17,760 1192 01:03:17,760 --> 01:03:21,880 Do irridu i, jew do irridu star i huwa l-kwistjoni? 1193 01:03:21,880 --> 01:03:26,160 1194 01:03:26,160 --> 01:03:29,255 Huwa l-terminatur null indirizz jew xi ħaġa li jinsabu fuq l-indirizz? 1195 01:03:29,255 --> 01:03:31,420 1196 01:03:31,420 --> 01:03:33,660 Jinsabu f'indirizz, id-dritt? 1197 01:03:33,660 --> 01:03:38,420 >> Allura għandna bżonn dereference tkun xi tkun hawnhekk, għaliex dan huwa biss uħud indirizz. 1198 01:03:38,420 --> 01:03:44,350 Biex tikseb effettivament l-bidu għandna bżonn li dereference dan 1199 01:03:44,350 --> 01:03:46,770 sabiex inkunu fatt tikseb x'hemm f'dan ewwel post. 1200 01:03:46,770 --> 01:03:48,690 1201 01:03:48,690 --> 01:03:52,910 Hekk jekk nagħmlu stilla i, liema ma irridu li ugwali? 1202 01:03:52,910 --> 01:03:53,885 1203 01:03:53,885 --> 01:03:54,760 UDJENZA: Back slash? 1204 01:03:54,760 --> 01:03:57,760 1205 01:03:57,760 --> 01:03:59,260 >> ZAMYLA Chan: Hemm. 1206 01:03:59,260 --> 01:04:01,430 Ma li jagħmel sens għal kulħadd? 1207 01:04:01,430 --> 01:04:05,620 Għandna bżonn biex tmur fil string tagħna u kun żgur li mhuwiex it-tmiem. 1208 01:04:05,620 --> 01:04:07,200 1209 01:04:07,200 --> 01:04:08,990 U allura aħna tista 'biss taġġorna bħal dan. 1210 01:04:08,990 --> 01:04:09,680 Aġġornament normali. 1211 01:04:09,680 --> 01:04:11,910 1212 01:04:11,910 --> 01:04:15,070 Dan sakemm dawn huma MET, liema do we bżonn tagħmel? 1213 01:04:15,070 --> 01:04:17,700 1214 01:04:17,700 --> 01:04:18,852 >> UDJENZA: Tul plus plus. 1215 01:04:18,852 --> 01:04:20,656 1216 01:04:20,656 --> 01:04:21,560 >> ZAMYLA Chan: Mm-hm. 1217 01:04:21,560 --> 01:04:25,540 U mbagħad wara l-għar loop itemm, liema do we jridu jirritornaw? 1218 01:04:25,540 --> 01:04:27,082 1219 01:04:27,082 --> 01:04:27,790 UDJENZA: Tul? 1220 01:04:27,790 --> 01:04:28,623 ZAMYLA Chan: Tul. 1221 01:04:28,623 --> 01:04:29,910 1222 01:04:29,910 --> 01:04:30,760 Hemm inti tmur. 1223 01:04:30,760 --> 01:04:33,790 1224 01:04:33,790 --> 01:04:37,810 Ovvjament l-laħam ta 'dan wieħed huwa fehim dan għall loop. 1225 01:04:37,810 --> 01:04:39,280 1226 01:04:39,280 --> 01:04:41,090 Does kulħadd nikseb kif li ħadmu? 1227 01:04:41,090 --> 01:04:42,460 1228 01:04:42,460 --> 01:04:44,170 Ninsab kuntenta li jmorru fuq mill-ġdid. 1229 01:04:44,170 --> 01:04:48,400 >> UDJENZA: It-tieni parti, hekk l-istilla i hemmhekk, 1230 01:04:48,400 --> 01:04:51,834 dak l-indirizz tal-first-- 1231 01:04:51,834 --> 01:04:53,250 ZAMYLA Chan: Mhuwiex l-indirizz. 1232 01:04:53,250 --> 01:04:54,142 Huwa x'hemm fuq. 1233 01:04:54,142 --> 01:04:55,600 UDJENZA: Li l-fatt fil hemmhekk. 1234 01:04:55,600 --> 01:04:57,475 ZAMYLA Chan: C'est x'hemm attwalment fil hemmhekk. 1235 01:04:57,475 --> 01:05:01,280 Allura dan huwa saying-- let me jagħmlu dan aħjar. 1236 01:05:01,280 --> 01:05:07,940 Allura dan huwa 0x04, u jien biss jmorru ngħid jien ser jagħmlu dan l-isem tiegħi. 1237 01:05:07,940 --> 01:05:14,531 1238 01:05:14,531 --> 01:05:15,030 OK. 1239 01:05:15,030 --> 01:05:17,456 1240 01:05:17,456 --> 01:05:19,080 Iva, I know I reviżjoni kwizz tonight. 1241 01:05:19,080 --> 01:05:20,620 1242 01:05:20,620 --> 01:05:21,540 Lottijiet ta 'reviżjoni kwizz. 1243 01:05:21,540 --> 01:05:23,500 1244 01:05:23,500 --> 01:05:26,620 Mela ejja ngħidu din is-sekwenza huwa l-isem tiegħi, Allison. 1245 01:05:26,620 --> 01:05:28,600 Little messy, iżda huwa hemmhekk. 1246 01:05:28,600 --> 01:05:33,640 U s jirrappreżenta l-post ta 'fejn l-sekwenza tibda, 1247 01:05:33,640 --> 01:05:41,950 hekk jien ser jagħmlu dan real-- dan huwa l-indirizz ta ', 1248 01:05:41,950 --> 01:05:45,000 fejn il-sekwenza tibda, id-dritt? 1249 01:05:45,000 --> 01:05:48,560 >> Allura dak li nagħmlu hawnhekk huwa li rridu użu pointers li jtenni permezz. 1250 01:05:48,560 --> 01:05:49,920 1251 01:05:49,920 --> 01:05:56,870 Allura aħna joħolqu xi pointer, i, li wkoll huwa ugwali għall-bidu tas-sekwenza. 1252 01:05:56,870 --> 01:05:57,880 1253 01:05:57,880 --> 01:06:03,820 U f'kull punt, irridu tkompli għaddejja l-firxa 1254 01:06:03,820 --> 01:06:07,570 hawn sakemm aħna laqat il-terminatur null. 1255 01:06:07,570 --> 01:06:12,320 Allura aħna dejjem tixtieq li jiċċekkjaw x'hemm f'kull wieħed minn dawn l-indirizzi. 1256 01:06:12,320 --> 01:06:15,730 >> Allura aħna dereference i, hekk li l-ewwel darba li nagħmlu dan irridu 1257 01:06:15,730 --> 01:06:17,810 jgħidu, OK, x'hemm fl-indirizz 0x04? 1258 01:06:17,810 --> 01:06:19,060 1259 01:06:19,060 --> 01:06:19,720 Huwa ta 'a. 1260 01:06:19,720 --> 01:06:20,660 OK, aħna qed tajba. 1261 01:06:20,660 --> 01:06:21,770 Tul inkrement. 1262 01:06:21,770 --> 01:06:22,790 Jimxu fuq dak li jmiss. 1263 01:06:22,790 --> 01:06:32,410 Mela ftakar i-- pointers żieda mill- daqs ta 'kwalunkwe dawn qed tipponta lejn. 1264 01:06:32,410 --> 01:06:35,320 Allura f'dan il-każ, peress li huwa char, dan ser taġġorna minn wieħed. 1265 01:06:35,320 --> 01:06:38,755 Allura issa aħna qed tmur biex tħares lejn 5, li jfisser li għaddej hawn fuq. 1266 01:06:38,755 --> 01:06:39,860 1267 01:06:39,860 --> 01:06:43,440 Allura jgħid OK, mur 0x05. 1268 01:06:43,440 --> 01:06:44,270 X'hemm fil hemmhekk? 1269 01:06:44,270 --> 01:06:44,930 Huwa ta 'l. 1270 01:06:44,930 --> 01:06:47,870 U inneħħu iżommu tagħmel dak sakemm hits dan wieħed. 1271 01:06:47,870 --> 01:06:50,990 U jgħid OK, x'hemm fil kwalunkwe indirizz li dan huwa? 1272 01:06:50,990 --> 01:06:53,060 It-terminatur null, OK. 1273 01:06:53,060 --> 01:06:53,870 Ħruġ. 1274 01:06:53,870 --> 01:06:55,240 U biss ritorn tul. 1275 01:06:55,240 --> 01:06:56,370 1276 01:06:56,370 --> 01:06:59,800 Għaliex ikollok bżonn x'hemm attwalment fil dak l-indirizz, le-indirizz innifsu. 1277 01:06:59,800 --> 01:07:03,110 1278 01:07:03,110 --> 01:07:05,790 >> Hemm ftit postijiet fejn inti fil-fatt bżonn l-indirizz. 1279 01:07:05,790 --> 01:07:08,720 Ħafna mill-ħin meta inti qed tuża l-u huwa 1280 01:07:08,720 --> 01:07:12,424 meta inti l-ewwel tassenja pointer jew meta 1281 01:07:12,424 --> 01:07:14,090 int tgħaddi fis funzjoni oħra. 1282 01:07:14,090 --> 01:07:16,350 1283 01:07:16,350 --> 01:07:21,330 OK, kulħadd tajba hemmhekk? 1284 01:07:21,330 --> 01:07:21,830 Tip ta '? 1285 01:07:21,830 --> 01:07:23,810 1286 01:07:23,810 --> 01:07:25,040 OK. 1287 01:07:25,040 --> 01:07:28,210 >> Allura jidher qisu konna ltqajna madwar 12 minuti xellug, 1288 01:07:28,210 --> 01:07:31,340 hekk aħna ser jmorru fuq forsi l-aħħar problema tagħna, 1289 01:07:31,340 --> 01:07:34,230 u allura hemm xi kunċetti li joħorġu 1290 01:07:34,230 --> 01:07:36,830 fil-frattemp nistgħu malajr jmorru fuq dak. 1291 01:07:36,830 --> 01:07:42,310 >> Allura jaqilbu gerijiet huwa l-aħħar problema hawn, swiċċ dikjarazzjonijiet. 1292 01:07:42,310 --> 01:07:44,970 1293 01:07:44,970 --> 01:07:49,450 Allura xogħol tiegħek huwa li jikteb dan b'tali mod li iġib ruħu l-istess 1294 01:07:49,450 --> 01:07:50,580 iżda ma jużax switches. 1295 01:07:50,580 --> 01:07:53,684 1296 01:07:53,684 --> 01:07:54,666 Idejn bajdani. 1297 01:07:54,666 --> 01:08:11,630 1298 01:08:11,630 --> 01:08:13,420 Allura xi mistoqsijiet dwar dan off BAT? 1299 01:08:13,420 --> 01:08:15,420 1300 01:08:15,420 --> 01:08:15,920 Xejn? 1301 01:08:15,920 --> 01:08:16,420 OK. 1302 01:08:16,420 --> 01:08:17,920 1303 01:08:17,920 --> 01:08:22,170 Does kulħadd jifhem li jekk il- każ ma jkollhom xejn wara dan, 1304 01:08:22,170 --> 01:08:25,029 dan ifisser li għandu jkun hekk issegwi l-pass li jmiss? 1305 01:08:25,029 --> 01:08:28,200 Allura każ 1 u 2 f'dan il-każ jagħmlu l-istess ħaġa eżatt. 1306 01:08:28,200 --> 01:08:31,153 1307 01:08:31,153 --> 01:08:32,444 Kultant punt ta 'konfużjoni. 1308 01:08:32,444 --> 01:09:32,700 1309 01:09:32,700 --> 01:09:33,488 >> Kull dritt. 1310 01:09:33,488 --> 01:09:34,404 Kull min ikollu xi ideat? 1311 01:09:34,404 --> 01:09:36,364 1312 01:09:36,364 --> 01:09:36,864 Yeah? 1313 01:09:36,864 --> 01:09:40,120 >> UDJENZA: Allura inti tista ' biss tagħmel jekk id-dikjarazzjonijiet. 1314 01:09:40,120 --> 01:09:41,140 >> ZAMYLA Chan: Mm-hm. 1315 01:09:41,140 --> 01:09:42,880 Allura x'hemm ewwel wieħed tagħna? 1316 01:09:42,880 --> 01:09:48,120 >> UDJENZA: Jekk n ugwali ugwali 1, u l-linji 2 għall jew N ugwali 1317 01:09:48,120 --> 01:09:51,059 ugwali 2, imbagħad jistampaw żgħar. 1318 01:09:51,059 --> 01:09:57,760 1319 01:09:57,760 --> 01:09:59,520 U allura tista 'tagħmel inkella jekk? 1320 01:09:59,520 --> 01:10:02,160 Jew tista 'inti biss tagħmel jekk? 1321 01:10:02,160 --> 01:10:03,650 >> ZAMYLA Chan: Tista 'tagħmel inkella jekk? 1322 01:10:03,650 --> 01:10:05,274 >> UDJENZA: Would jimpurtax jekk inti tagħmel jekk? 1323 01:10:05,274 --> 01:10:06,320 ZAMYLA Chan: Allura huwa ma. 1324 01:10:06,320 --> 01:10:10,160 Does anyone-- hekk, inti se tikseb l-istess output 1325 01:10:10,160 --> 01:10:13,930 jekk inti tuża biss IFs versus jekk inti tuża IFs inkella. 1326 01:10:13,930 --> 01:10:17,090 Tista guys think-raġuni għaliex inti tista 'tixtieq li tuża ieħor 1327 01:10:17,090 --> 01:10:18,680 jekk versus ħafna IFs? 1328 01:10:18,680 --> 01:10:20,260 1329 01:10:20,260 --> 01:10:21,510 Għandha ma 'effiċjenza. 1330 01:10:21,510 --> 01:10:22,225 Yeah? 1331 01:10:22,225 --> 01:10:24,783 >> UDJENZA: Ikun check l-IFs kull darba. 1332 01:10:24,783 --> 01:10:26,076 1333 01:10:26,076 --> 01:10:28,110 >> ZAMYLA Chan: Għalhekk anki jekk hit dan l-ewwel wieħed, 1334 01:10:28,110 --> 01:10:29,880 dan imur fuq ċekk kull wieħed ieħor. 1335 01:10:29,880 --> 01:10:36,690 Allura inti tixtieq li tuża jekk IfS ieħor fil-każijiet fejn wieħed minnhom qatt ser japplika biss. 1336 01:10:36,690 --> 01:10:39,380 Allura esklużjoni reċiproku huwa dak għandna t-tendenza li jgħidu. 1337 01:10:39,380 --> 01:10:41,410 1338 01:10:41,410 --> 01:10:46,550 Jekk għandek mazz ta 'IFs, dan ifisser li forsi aktar minn wieħed minnhom 1339 01:10:46,550 --> 01:10:49,630 kwistjonijiet, u forsi aktar minn wieħed minnhom jista 'jkun minnu. 1340 01:10:49,630 --> 01:10:51,910 U inti tixtieq tnejn minnhom biex tesegwixxi jekk dawn qed veru. 1341 01:10:51,910 --> 01:10:57,180 Jekk inti biss tixtieq wieħed minnhom biex jaħdmu f'dawn il-każijiet reċiprokament esklussivi, 1342 01:10:57,180 --> 01:11:00,790 inti tixtieq li tuża inkella jekk, minħabba dan kollu għandu ma 'l-effiċjenza. 1343 01:11:00,790 --> 01:11:05,350 Kodiċi tiegħek hija biss ddisinjati aħjar jekk hi tkun osservanti mal din il-prattika. 1344 01:11:05,350 --> 01:11:07,330 Allura f'dan il-każ aħna ser ikollhom inkella jekk. 1345 01:11:07,330 --> 01:11:09,080 U dan ikun? 1346 01:11:09,080 --> 01:11:11,890 >> UDJENZA: n huwa daqs ugwali 3. 1347 01:11:11,890 --> 01:11:12,765 ZAMYLA Chan: Perfect. 1348 01:11:12,765 --> 01:11:19,420 1349 01:11:19,420 --> 01:11:20,445 Mezz istampar. 1350 01:11:20,445 --> 01:11:25,190 1351 01:11:25,190 --> 01:11:29,930 U mbagħad fl-aħħar tagħna każ, liema do għandna? 1352 01:11:29,930 --> 01:11:31,495 Ieħor jew inkella jekk? 1353 01:11:31,495 --> 01:11:32,120 UDJENZA: Else. 1354 01:11:32,120 --> 01:11:33,450 1355 01:11:33,450 --> 01:11:37,900 >> ZAMYLA Chan: Do we want-- Inti tixtieq inkella jekk għaliex għandna każijiet konkreti. 1356 01:11:37,900 --> 01:11:39,270 Mhuwiex tip ta 'qabda kollha. 1357 01:11:39,270 --> 01:11:44,247 Jekk kellek default fil switch-- ftakar fi swiċċis inti jista 'jkollhom każ, 1358 01:11:44,247 --> 01:11:45,330 u allura inti għandek default. 1359 01:11:45,330 --> 01:11:48,760 Jekk kellek default, li l-xorta tad-dikjarazzjoni inkella tiegħek hemmhekk. 1360 01:11:48,760 --> 01:11:52,180 Imma jekk ikollha biss każijiet, dan ifisser li għandek bżonn 1361 01:11:52,180 --> 01:11:54,315 biex tikkontrolla biex tara jekk huwa kull wieħed minn dawk. 1362 01:11:54,315 --> 01:11:57,755 Allura f'dan il-każ, ikun il-4 jew 5. 1363 01:11:57,755 --> 01:12:00,480 1364 01:12:00,480 --> 01:12:01,450 Irridu print off. 1365 01:12:01,450 --> 01:12:02,990 1366 01:12:02,990 --> 01:12:03,630 Huwa kbir. 1367 01:12:03,630 --> 01:12:06,640 1368 01:12:06,640 --> 01:12:07,509 U hemm inti tmur. 1369 01:12:07,509 --> 01:12:08,800 U li tkun program tiegħek. 1370 01:12:08,800 --> 01:12:11,890 1371 01:12:11,890 --> 01:12:17,050 >> Allura f'dan il-każ jekk aħna kellhom xi ħaġa default, 1372 01:12:17,050 --> 01:12:20,470 aħna se jkollhom ieħor fil tkun xi tkun riedu magħna biex jagħmlu. 1373 01:12:20,470 --> 01:12:23,365 Allura li hija distinzjoni tajba tkun taf, li jifhmu. 1374 01:12:23,365 --> 01:12:25,368 1375 01:12:25,368 --> 01:12:27,790 Does li jgħinu bi swiċċijiet għalik? 1376 01:12:27,790 --> 01:12:28,800 Perfect. 1377 01:12:28,800 --> 01:12:29,390 Kull dritt. 1378 01:12:29,390 --> 01:12:31,320 1379 01:12:31,320 --> 01:12:33,340 >> Aħna għandna madwar tmien minuti xellug. 1380 01:12:33,340 --> 01:12:37,090 Do inti guys kienu xi kunċetti oħra ta 'livell għoli? 1381 01:12:37,090 --> 01:12:38,720 Mistoqsijiet ġenerali? 1382 01:12:38,720 --> 01:12:39,220 Iva? 1383 01:12:39,220 --> 01:12:42,860 >> UDJENZA: Kelli mistoqsija dwar wieħed minnhom 1384 01:12:42,860 --> 01:12:46,257 li kien ta 'madwar l-addoċċ ġeneratur numru fuq kwizz żero. 1385 01:12:46,257 --> 01:12:47,340 ZAMYLA Chan: Oh, li wieħed. 1386 01:12:47,340 --> 01:12:51,460 Li wieħed huwa wieħed ieħor fejn huwa aktar matematika than-- iva. 1387 01:12:51,460 --> 01:12:53,800 1388 01:12:53,800 --> 01:12:59,452 Is-soluzzjoni għal that-- anke meta I Nara dan, jien bħal dak li huwa dan. 1389 01:12:59,452 --> 01:13:00,590 >> UDJENZA: Kien numru 7. 1390 01:13:00,590 --> 01:13:02,720 1391 01:13:02,720 --> 01:13:05,310 >> ZAMYLA Chan: Hija stramba fl-opinjoni tiegħi. 1392 01:13:05,310 --> 01:13:07,260 1393 01:13:07,260 --> 01:13:11,630 Allura bażikament inti tixtieq li tuża drand48, li 1394 01:13:11,630 --> 01:13:15,420 se jagħtuk xi numru bejn 0 u 1. 1395 01:13:15,420 --> 01:13:21,200 U inti tixtieq li tagħmel użu minnha hekk li inti b'xi tikseb a-- 1396 01:13:21,200 --> 01:13:26,690 u huwa ħafna aktar ta 'problema matematika lili minn I think problema CS. 1397 01:13:26,690 --> 01:13:29,040 1398 01:13:29,040 --> 01:13:37,845 >> Il-mod li inti tagħmel it-- u xi kultant se jkun biss bħal dik. 1399 01:13:37,845 --> 01:13:39,340 1400 01:13:39,340 --> 01:13:41,090 Għal darb'oħra, dawn huma l- F'każijiet fejn huwa tip 1401 01:13:41,090 --> 01:13:46,310 ta 'prodotti simili jiktbu dak li għandek tista 'u kreditu parzjali. 1402 01:13:46,310 --> 01:13:47,800 1403 01:13:47,800 --> 01:13:51,510 Mela jekk irridu ritorn, nafu li aħna qed 1404 01:13:51,510 --> 01:13:54,182 se tkun qed tuża drand48 b'xi mod, id-dritt? 1405 01:13:54,182 --> 01:13:55,640 Allura għaliex ma aħna biss LOGHOME dak isfel. 1406 01:13:55,640 --> 01:13:58,286 1407 01:13:58,286 --> 01:13:59,410 Aħna qed tużaha b'xi mod. 1408 01:13:59,410 --> 01:14:00,780 1409 01:14:00,780 --> 01:14:04,190 Il-mod li huma għandhom inti guys tużah huwa 1410 01:14:04,190 --> 01:14:08,175 bħal dan, li ser nipprova u jispjegaw. 1411 01:14:08,175 --> 01:14:10,200 1412 01:14:10,200 --> 01:14:15,340 >> Allura bażikament dak li jiġri hawn huwa għaliex dan huwa bejn 0 u 1, 1413 01:14:15,340 --> 01:14:19,300 dak li qed tagħmel huwa int multiplikazzjoni by-- dan huwa ferm kwistjoni matematika. 1414 01:14:19,300 --> 01:14:22,010 Just caħda ta 'responsabbiltà sħiħa, dan huwa kompletament mistoqsija matematika. 1415 01:14:22,010 --> 01:14:23,990 Dak li qed tagħmel huwa minħabba 0 u 1 u int 1416 01:14:23,990 --> 01:14:26,460 jixtiequ li din tkun fi din il-firxa, inti fil-fatt 1417 01:14:26,460 --> 01:14:29,360 figura kif kbir il-firxa hija, u mbagħad 1418 01:14:29,360 --> 01:14:32,710 inti bażikament iskala it up, li huwa dak li din qed tagħmel. 1419 01:14:32,710 --> 01:14:39,050 >> b nieqes jagħtik li firxa, il- differenza bejn dawk in-numri. 1420 01:14:39,050 --> 01:14:44,040 Inti jista 'jimmoltiplika bejn 0 u 1, u mbagħad żżid biss 1421 01:14:44,040 --> 01:14:48,870 ifisser li tiegħek ż it up b'tali mod li huwa bejn A u B, 1422 01:14:48,870 --> 01:14:52,377 li I ma verament simili din il-problema. 1423 01:14:52,377 --> 01:14:58,380 1424 01:14:58,380 --> 01:15:01,790 As I said, dan il-kwizz huwa maħsub biex jinkludi 1425 01:15:01,790 --> 01:15:04,110 nies li huma inqas komdi, x'imkien bejniethom, 1426 01:15:04,110 --> 01:15:05,070 u aktar komdi. 1427 01:15:05,070 --> 01:15:07,550 Hekk jekk huma jkunu għamlu hekk li kien xi ħaġa 1428 01:15:07,550 --> 01:15:10,050 li kulħadd fil-inqas post komdu se tikseb, 1429 01:15:10,050 --> 01:15:12,259 rridu naraw wisq ħafna nies skorja perfects, 1430 01:15:12,259 --> 01:15:13,925 u l-aktar komdu tkun bored. 1431 01:15:13,925 --> 01:15:14,980 1432 01:15:14,980 --> 01:15:18,970 >> Allura dawn dejjem ikollhom dawn tip ta 'mistoqsijiet teaser moħħ 1433 01:15:18,970 --> 01:15:22,695 li huma intenzjonati li jkunu ftit diffiċli li jieħu xi ħsieb kreattiv. 1434 01:15:22,695 --> 01:15:25,030 1435 01:15:25,030 --> 01:15:27,790 Meta inti tara minnhom, ma jsibux wisq stumped. 1436 01:15:27,790 --> 01:15:31,720 Nixtieq definittivament ngħid flip permezz kwizz tiegħek l-ewwel. 1437 01:15:31,720 --> 01:15:35,020 Jindirizzaw il-problemi li taf inti tista ', 1438 01:15:35,020 --> 01:15:38,480 għaliex hemm l-ebda użu li jeħlu fuq problema meta jkun hemm tlieta 1439 01:15:38,480 --> 01:15:42,090 jew erba 'jew ħames fuq il-paġna wara li inti tista 'faċilment jagħmlu. 1440 01:15:42,090 --> 01:15:45,331 1441 01:15:45,331 --> 01:15:48,520 >> UDJENZA: Għaliex eżattament do inti immoltiplika lilha mill-firxa? 1442 01:15:48,520 --> 01:15:54,935 >> ZAMYLA Chan: Inti jimmultiplikaw-medda li inti know-- huwa simili kemm wara 1443 01:15:54,935 --> 01:15:55,485 tridu? 1444 01:15:55,485 --> 01:15:57,840 1445 01:15:57,840 --> 01:16:02,130 Allura inti tista 'taħseb, minħabba li prospetti numru bejn 0 u 1, 1446 01:16:02,130 --> 01:16:03,890 inti tista 'taħseb bħala persentaġġ. 1447 01:16:03,890 --> 01:16:12,195 Allura huwa bażikament tgħid jekk ikollna linja numru tagħna hawn, a hija hawnhekk, 1448 01:16:12,195 --> 01:16:13,840 u b huwa hawnhekk. 1449 01:16:13,840 --> 01:16:19,170 Int simili kemm fil-passat kemm a huwa? 1450 01:16:19,170 --> 01:16:20,010 Hija kollha li aħna qed tagħmel. 1451 01:16:20,010 --> 01:16:24,920 Allura inti qed tistaqsi biss għall- persentaġġ ta 'din il-firxa, li 1452 01:16:24,920 --> 01:16:26,170 huwa dak huwa giving you. 1453 01:16:26,170 --> 01:16:30,915 U allura inti bażikament biss iskala it up billi żżid. 1454 01:16:30,915 --> 01:16:32,302 Huwa teaser moħħ matematika. 1455 01:16:32,302 --> 01:16:35,400 1456 01:16:35,400 --> 01:16:39,060 >> Jekk kien hemm xi aħħar parir minuta, I ngħid flip permezz tal-mistoqsijiet, 1457 01:16:39,060 --> 01:16:41,660 insemmu dawk li int jafu li bħal, oh sibt dan. 1458 01:16:41,660 --> 01:16:43,196 1459 01:16:43,196 --> 01:16:45,820 Kważi żgur dawn qed tmur biex tkun mistoqsijiet li inti mhux se tkun taf 1460 01:16:45,820 --> 01:16:49,580 jew li int ser ikollhom ħin għal, hekk hit saħħiet tiegħek, OK? 1461 01:16:49,580 --> 01:16:50,990 Inti guys huma ser kbira. 1462 01:16:50,990 --> 01:16:52,740 Hemm ħafna ta ' mistoqsijiet għal raġuni, 1463 01:16:52,740 --> 01:16:57,140 sabiex ikollok ħin biex tip ta 'jkollhom l-opportunità 1464 01:16:57,140 --> 01:16:59,330 biex turi liema int verament tajba fil. 1465 01:16:59,330 --> 01:17:02,370 Allura huwa OK jekk int mhux tajba fil kollox. 1466 01:17:02,370 --> 01:17:03,371 Play biex saħħiet tiegħek. 1467 01:17:03,371 --> 01:17:03,870 Iva? 1468 01:17:03,870 --> 01:17:06,536 >> UDJENZA: Allura huwa dan se ritorn xi ħaġa li maqtugħa? 1469 01:17:06,536 --> 01:17:10,810 1470 01:17:10,810 --> 01:17:15,015 Iva, se, għaliex drand prospetti bejn 0 u 1. 1471 01:17:15,015 --> 01:17:17,459 1472 01:17:17,459 --> 01:17:19,250 Hija ser jirritorna l int, għaliex dan ser truncate 1473 01:17:19,250 --> 01:17:22,933 meta aħna żid jew jimmultiplikaw minnha. 1474 01:17:22,933 --> 01:17:27,670 1475 01:17:27,670 --> 01:17:28,442 Kessaħ. 1476 01:17:28,442 --> 01:17:29,525 Kwalunkwe mistoqsijiet aħħar minuta? 1477 01:17:29,525 --> 01:17:31,310 1478 01:17:31,310 --> 01:17:32,615 >> Inti guys huma se jagħmlu kbira. 1479 01:17:32,615 --> 01:17:34,440 Inti ser tkun fabulous. 1480 01:17:34,440 --> 01:17:37,100 U anki jekk le, se jkun hemm jkun kandju hawn ġimgħa d-dieħla. 1481 01:17:37,100 --> 01:17:39,040 1482 01:17:39,040 --> 01:17:40,020 U jien ser imħabba inti. 1483 01:17:40,020 --> 01:17:41,270 I ser imħabba inti guys indipendentement. 1484 01:17:41,270 --> 01:17:42,550 1485 01:17:42,550 --> 01:17:43,930 Kull dritt, kulħadd, Xorti tajba. 1486 01:17:43,930 --> 01:17:44,680 Jkollhom ħafna ħin. 1487 01:17:44,680 --> 01:17:45,620 1488 01:17:45,620 --> 01:17:46,620 Inti qed tmur biex tkun multa. 1489 01:17:46,620 --> 01:17:47,370 U inti taf liema? 1490 01:17:47,370 --> 01:17:50,310 Fil-jumejn li għaddej li jkun aktar, filwaqt I 1491 01:17:50,310 --> 01:17:53,675 għandhom żewġ midterms nhar il-Ħamis, hekk Talanqas int guys se jsir. 1492 01:17:53,675 --> 01:17:56,550 Kull dritt, jien ser tara inti guys ġimgħa d-dieħla. 1493 01:17:56,550 --> 01:17:58,208