1 00:00:07,275 --> 00:00:08,980 [Powered by Google Translate] LEXI ROSS: Kull dritt, hi, kulħadd. 2 00:00:08,980 --> 00:00:11,930 Merħba għall-ewwel CS50 supersection. 3 00:00:11,930 --> 00:00:13,800 Dan se jkun il-ġimgħa biss ta 'supersections. 4 00:00:13,800 --> 00:00:17,130 Wara dan, inti ser tkun tmur taqsima regolari mal tiegħek 5 00:00:17,130 --> 00:00:18,530 assenjat TF. 6 00:00:18,530 --> 00:00:20,280 Iżda din il-ġimgħa, aħna qed tagħmel dan fi ftit ta 'differenti 7 00:00:20,280 --> 00:00:23,530 format, għalkemm il-format attwali, kif huwa se jmorru 8 00:00:23,530 --> 00:00:25,950 għall-siegħa li jmiss u nofs jew hekk, se tkun pjuttost 9 00:00:25,950 --> 00:00:27,700 simili għal dak li inti ser tkun qed tara għal 10 00:00:27,700 --> 00:00:29,350 il-bqija tas-semestru. 11 00:00:29,350 --> 00:00:33,630 >> Allura dak li aħna qed tmur biex tagħmel hu li tibda billi tmur fuq il- 12 00:00:33,630 --> 00:00:35,920 parti sezzjoni ta 'sett problema tiegħek. 13 00:00:35,920 --> 00:00:38,940 Mela jekk inti stajt taqra fuq is-sett p, li wieħed jittama li għandek, 14 00:00:38,940 --> 00:00:41,120 int ser tara li hemm parti msejħa "A Sezzjoni tal 15 00:00:41,120 --> 00:00:43,190 Mistoqsijiet ", u dawn huma maħsuba biex tkun marret 16 00:00:43,190 --> 00:00:44,180 aktar fit-taqsimiet tiegħek. 17 00:00:44,180 --> 00:00:47,510 Allura għandek vantaġġ billi jkunu hawn li ikollok biex 18 00:00:47,510 --> 00:00:50,680 jmorru fuq dawn il-mistoqsijiet aktar kunċettwali bbażati. 19 00:00:50,680 --> 00:00:52,780 U wara nagħmlu dan, aħna qed tmur biex jmorru fuq l-aħħar tnejn 20 00:00:52,780 --> 00:00:55,070 sezzjoni domandi, li huma adsa aktar 21 00:00:55,070 --> 00:00:56,330 fis kodifikazzjoni mistoqsijiet tat-tip. 22 00:00:56,330 --> 00:00:58,470 Allura aħna qed attwalment se jkollhom inti guys tieħu ftit 23 00:00:58,470 --> 00:01:01,040 minuti għal kull mistoqsija, jippruvaw isolvu minnhom fuq tiegħek, u 24 00:01:01,040 --> 00:01:03,590 allura aħna qed tmur biex jiltaqgħu flimkien bl-użu CS50 ġdida 25 00:01:03,590 --> 00:01:06,670 Spazji għodda u jmorru fuq it-tweġibiet sabiex inti kollha għandhom l- 26 00:01:06,670 --> 00:01:09,130 kodiċi korrett għal reviżjoni. 27 00:01:09,130 --> 00:01:10,790 >> Allura koppja ta 'avviżi. 28 00:01:10,790 --> 00:01:12,690 Tinsiex li hemm ħinijiet tal-uffiċċju kull lejl din 29 00:01:12,690 --> 00:01:16,500 ġimgħa Annenberg 8-11, so do jieħdu 30 00:01:16,500 --> 00:01:17,410 vantaġġ ta 'dawk. 31 00:01:17,410 --> 00:01:21,660 U wkoll, ma tibda l pġ stabbilita tard wisq fil-ġimgħa. 32 00:01:21,660 --> 00:01:24,640 Bidu tonight jew għada bil-lejl l-aktar tard. 33 00:01:24,640 --> 00:01:26,770 Inti se jiddispjaċina minnu jekk iddum tistenna wisq biex tibda 34 00:01:26,770 --> 00:01:27,970 u jiddekorri fi kwistjonijiet. 35 00:01:27,970 --> 00:01:31,160 Sabiex jieħdu parir tagħna u definittivament jibdew kmieni. 36 00:01:31,160 --> 00:01:32,860 Dan ser tkun mod tajjeb biex tibda ma 37 00:01:32,860 --> 00:01:34,450 dawn il-mistoqsijiet taqsima. 38 00:01:34,450 --> 00:01:35,810 Hekk jien Lexi, bil-mod. 39 00:01:35,810 --> 00:01:36,740 I'ma TF. 40 00:01:36,740 --> 00:01:38,455 U dan huwa Dan, min s wkoll TF. 41 00:01:38,455 --> 00:01:38,940 DAN BRADLEY: ħej, guys. 42 00:01:38,940 --> 00:01:39,770 LEXI ROSS: U hu għaddej biex tikseb 43 00:01:39,770 --> 00:01:41,370 beda bil-mistoqsijiet. 44 00:01:41,370 --> 00:01:42,410 >> DAN BRADLEY: Kull dritt. 45 00:01:42,410 --> 00:01:46,730 Allura jien ser biss tintroduċi kompilatur ftit koppja 46 00:01:46,730 --> 00:01:50,350 kwistjonijiet li aħna qed tmur biex jitkellmu dwar u biss jgħaddu 47 00:01:50,350 --> 00:01:54,550 xi tip ta 'ideat kunċettwali li għandna bżonn biex tmexxi effettivament 48 00:01:54,550 --> 00:01:59,120 kodiċi, jew b'apparat jew ma tip tagħna ta 'foloz 49 00:01:59,120 --> 00:02:01,520 apparat, Run CS50 u Spazji. 50 00:02:01,520 --> 00:02:05,550 Mela ejja biss tara jekk xi ħadd fl-udjenza jkollha xi idea 51 00:02:05,550 --> 00:02:07,450 dwar dak li aħna qed jitkellem dwar. 52 00:02:07,450 --> 00:02:11,130 >> Allura dak li huwa librerija fil-kuntest tal-kodiċi? 53 00:02:11,130 --> 00:02:13,680 Kull min ikollu xi idea? 54 00:02:13,680 --> 00:02:14,250 Okay. 55 00:02:14,250 --> 00:02:15,770 Sweet. 56 00:02:15,770 --> 00:02:17,876 UDJENZA: Bħal stokk ta 'funzjonijiet li xi ħadd ieħor 57 00:02:17,876 --> 00:02:19,690 diġà pprogrammati li għandna jistgħu jibnu? 58 00:02:19,690 --> 00:02:20,230 DAN BRADLEY: Eżattament. 59 00:02:20,230 --> 00:02:24,180 Allura librerija huwa stokk ta 'funzjonijiet li xi ħadd ieħor 60 00:02:24,180 --> 00:02:27,100 diġà pprogrammat li aħna ma jkollhom 61 00:02:27,100 --> 00:02:28,480 jimplimenta mill-ġdid nfusna. 62 00:02:28,480 --> 00:02:32,140 Allura aħna għandna affarijiet bħall-istandard I / O librerija, il- 63 00:02:32,140 --> 00:02:38,720 cs50.h librerija, li huma affarijiet li d-dinja, il- 64 00:02:38,720 --> 00:02:41,870 Internet, il-persunal għamlu li jagħmel tagħna 65 00:02:41,870 --> 00:02:43,670 ħajja aktar faċli kif kodifikaturi. 66 00:02:43,670 --> 00:02:46,410 Allura kif taħseb li jistampaw affarijiet li screen? 67 00:02:46,410 --> 00:02:49,910 Għandi l-ebda idea, printf tagħmlu għalija. 68 00:02:49,910 --> 00:02:52,290 Hija xi ħaġa xi ħadd ieħor diġà għamlet dan huwa 69 00:02:52,290 --> 00:02:54,640 biża 'u taħdem b'mod tajjeb. 70 00:02:54,640 --> 00:02:55,440 >> Okay. 71 00:02:55,440 --> 00:02:59,160 Allura l-użu libreriji, min-naħa l-oħra, madankollu, inti għandek 72 00:02:59,160 --> 00:03:02,450 li fil-fatt jagħmlu xi affarijiet żejda bil-kodiċi tiegħek. 73 00:03:02,450 --> 00:03:07,400 Allura inti għandek tuża affarijiet bħal dan # jinkludu. 74 00:03:07,400 --> 00:03:09,190 Xi jfisser li tagħmel? 75 00:03:09,190 --> 00:03:13,010 X'rwol li play meta ikollok fil-programm? 76 00:03:13,010 --> 00:03:15,128 UDJENZA: Hija ihallik tagħmel użu ta 'xi funzjonijiet li huma 77 00:03:15,128 --> 00:03:16,040 [Inaudible] 78 00:03:16,040 --> 00:03:19,515 librerija billi sempliċement jużaw id-definizzjonijiet li jkunu diġà 79 00:03:19,515 --> 00:03:20,425 [Inaudible] 80 00:03:20,425 --> 00:03:20,880 librerija. 81 00:03:20,880 --> 00:03:21,680 DAN BRADLEY: Okay. 82 00:03:21,680 --> 00:03:25,930 Hija ihallik pull funzjonijiet tal-librerija fil-kodiċi tiegħek, iżda 83 00:03:25,930 --> 00:03:29,320 tagħmlu b'mod li mhuwiex eżattament l-istess bħal simili 84 00:03:29,320 --> 00:03:32,020 -Lcs50, li aħna ser tingħata fil-minuta. 85 00:03:32,020 --> 00:03:36,010 Hija biss tikri l-kumpilatur jafu li ħej, hemm dawn 86 00:03:36,010 --> 00:03:40,550 funzjonijiet li ser toħroġ fil-kodiċi tiegħek. 87 00:03:40,550 --> 00:03:44,240 Ikunu konxji li jekk ma jkunux kompletament deskritti fil-kodiċi 88 00:03:44,240 --> 00:03:47,110 li l-quddiem tal inti, hemm xi funzjoni librerija 89 00:03:47,110 --> 00:03:49,510 li ser tieħu kura ta 'dan. 90 00:03:49,510 --> 00:03:53,010 >> Allura fil-każ ta 'printf, li aħna ser imorru fuq ftit 91 00:03:53,010 --> 00:03:56,400 żminijiet tal-lum, huwa l-istandard I / O librerija. 92 00:03:56,400 --> 00:04:00,010 Għalhekk, filwaqt li jien ma jiddefinixxu printf kullimkien fil-kodiċi tiegħi qatt, il- 93 00:04:00,010 --> 00:04:05,340 standard I / O jieħu ħsieb ta 'dan għalija, u jien ser jagħmlu # Jinkludu 94 00:04:05,340 --> 00:04:13,780 stdio.h, u se iġbed f'dawn il-funzjonijiet li I 95 00:04:13,780 --> 00:04:15,400 ma qatt definiti. 96 00:04:15,400 --> 00:04:20,019 Allura x'inhi d-differenza, allura, bejn din # Jinkludu 97 00:04:20,019 --> 00:04:22,320 u-lcs50? 98 00:04:22,320 --> 00:04:25,890 X'jagħmel-lcs50 tagħmel meta I jgħaddu lill- 99 00:04:25,890 --> 00:04:29,430 kompilatur, bħall clang? 100 00:04:29,430 --> 00:04:32,670 Kull min ikollu xi idea? 101 00:04:32,670 --> 00:04:34,631 Okay. 102 00:04:34,631 --> 00:04:35,605 Yeah? 103 00:04:35,605 --> 00:04:39,020 UDJENZA: Hija ihallik aċċess għall-librerija CS50? 104 00:04:39,020 --> 00:04:42,120 DAN BRADLEY: Hija ihallik aċċess għall-librerija CS50 fil 105 00:04:42,120 --> 00:04:46,610 li jirrakkonta l-kumpilatur, clang, li ħej, din hija fejn 106 00:04:46,610 --> 00:04:50,930 inti fil-fatt tmur biex tikseb dawn il-funzjonijiet. 107 00:04:50,930 --> 00:04:55,010 Allura l-# Jinkludu tgħid li hemm 108 00:04:55,010 --> 00:04:58,510 dawn il-funzjonijiet x'imkien. 109 00:04:58,510 --> 00:05:02,680 Il lcs50-says, mur dan il-post fil-kompjuter tiegħek - 110 00:05:02,680 --> 00:05:05,770 dak l-librerija cs50 - 111 00:05:05,770 --> 00:05:09,990 u iġbed il-kodiċi attwali għal dawn il-funzjonijiet. 112 00:05:13,110 --> 00:05:14,370 Does li jagħmel, sens kulħadd? 113 00:05:14,370 --> 00:05:17,930 >> Allura dawn huma kollha affarijiet li għandhom jgħinu kompilatur tiegħek 114 00:05:17,930 --> 00:05:22,490 flimkien ma jagħmlu l-kodiċi tmexxi effettivament. 115 00:05:22,490 --> 00:05:23,350 Quick kwistjoni. 116 00:05:23,350 --> 00:05:24,870 In-nies jafu x'inhi kompilatur hu? 117 00:05:28,220 --> 00:05:29,700 Tajba sens? 118 00:05:29,700 --> 00:05:33,160 Huwa bażikament tieħu l-kodiċi miktub li għandek, 119 00:05:33,160 --> 00:05:35,380 dan jinbidel biex binarju, konverżjoni fis-kodiċi magna, 120 00:05:35,380 --> 00:05:39,370 hekk kompjuter tiegħek jistgħu attwalment jifhmu dan. 121 00:05:39,370 --> 00:05:43,330 U mingħajr aktar dewmien, aħna qed tmur biex tmur fil-aktar 122 00:05:43,330 --> 00:05:46,640 eżerċizzji reali kodifika li inti guys se jkollhom xi gost 123 00:05:46,640 --> 00:05:49,850 sinking snienek fi, u Lexi se jmorru fuq dak. 124 00:05:49,850 --> 00:05:51,110 >> LEXI ROSS: Okay. 125 00:05:51,110 --> 00:05:51,455 Tal-biża '. 126 00:05:51,455 --> 00:05:55,470 Allura aħna qed tmur biex jmorru fuq żewġ mistoqsijiet hawn. 127 00:05:55,470 --> 00:06:01,170 Allura l-ewwel waħda huwa attwalment, tista 'tara, huwa ftit 128 00:06:01,170 --> 00:06:03,240 żgħar dritt hawn, imma essenzjalment huwa inti titlob li 129 00:06:03,240 --> 00:06:04,930 jikteb programm li jieħdu xi input utent. 130 00:06:04,930 --> 00:06:09,058 M'inix ċert għaliex hemm kwadru iswed hemmhekk. 131 00:06:09,058 --> 00:06:10,000 Huwa misterjuża. 132 00:06:10,000 --> 00:06:12,180 Għandu jkun multa, għalkemm. 133 00:06:12,180 --> 00:06:16,000 Għalhekk inti tixtieq li tieħu l-input utent fil Celsius, jikkonvertu dak 134 00:06:16,000 --> 00:06:18,270 biex Fahrenheit, u mbagħad tgħid l-utent liema t-temperatura 135 00:06:18,270 --> 00:06:19,720 tkun fil Fahrenheit. 136 00:06:19,720 --> 00:06:25,530 Allura tista 'tara kampjun ta' input / output sekwenza hawn. 137 00:06:25,530 --> 00:06:28,770 L-inputs utent - wara Celsius, l-kuraġġużi jirreferi għal 138 00:06:28,770 --> 00:06:29,300 jintuza mill-utent. 139 00:06:29,300 --> 00:06:32,460 Allura l-utent inputs 100, u l-outputs tal-programm 140 00:06:32,460 --> 00:06:34,530 Fahrenheit, 212.0. 141 00:06:34,530 --> 00:06:36,700 U distinzjoni importanti f'dan il-programm huwa li aħna qed 142 00:06:36,700 --> 00:06:41,770 se jkollhom biss post deċimali wieħed, hekk aħna ser tara kif tagħmel 143 00:06:41,770 --> 00:06:43,020 dan ukoll. 144 00:06:43,020 --> 00:06:45,780 U għalhekk ħaġa oħra li wieħed jinnota huwa li aħna qed tuża a.out 145 00:06:45,780 --> 00:06:49,960 minħabba clang, il-kompilatur, awtomatikament ismijiet binarja tagħha 146 00:06:49,960 --> 00:06:53,460 fajls a.out sakemm inti tispeċifika dan ma 'bandiera ċerta li tagħti 147 00:06:53,460 --> 00:06:55,410 dan f'ismu, iżda għal issa aħna qed biss ser tuża l- 148 00:06:55,410 --> 00:06:57,070 , default a.out. 149 00:06:57,070 --> 00:07:01,320 >> Mela ejja fil-fatt tieħu ftit minuti u tipprova tikteb out 150 00:07:01,320 --> 00:07:02,570 xi kodiċi għal dan yourselves. 151 00:07:05,900 --> 00:07:07,380 Allura huwa 04:15. 152 00:07:07,380 --> 00:07:10,470 Allura fil 04:20, aħna ser jiġu lura u - oh, id-dritt. 153 00:07:10,470 --> 00:07:12,960 Spazji. 154 00:07:12,960 --> 00:07:13,980 Kessaħ. 155 00:07:13,980 --> 00:07:16,500 Dan huwa tip ta 'bħal dak li nsejħu kodiċi iskeletru f'dak 156 00:07:16,500 --> 00:07:19,870 huwa iskeletru, iżda inti għandek timla l-laħam tal- 157 00:07:19,870 --> 00:07:21,590 programm li attwalment jagħmilha run. 158 00:07:21,590 --> 00:07:25,980 Allura tista 'tara l-# Jinkludu direttivi sa hemm biex jinkludu 159 00:07:25,980 --> 00:07:28,040 cs50 u stdio. 160 00:07:28,040 --> 00:07:32,010 I nnotat fil-kumment tal-formula attwali għall-konverżjoni 161 00:07:32,010 --> 00:07:35,310 Celsius għal Fahrenheit, fil-każ li inti ma tiftakarx minn għoli 162 00:07:35,310 --> 00:07:36,740 iskola xjenza jew whatnot. 163 00:07:36,740 --> 00:07:38,450 U allura din hija biss iskeletru għal 164 00:07:38,450 --> 00:07:39,450 il-funzjoni prinċipali attwali. 165 00:07:39,450 --> 00:07:41,680 Allura dak kollu li għandek tikteb se jmorru hawn. 166 00:07:45,640 --> 00:07:50,490 U sabiex tikseb effettivament dan l-ispazju - 167 00:07:50,490 --> 00:07:56,105 hekk CS50 Spazji jistgħu jiġu aċċessati permezz dan il-URL, li hija Dan 168 00:07:56,105 --> 00:08:02,505 ser jikteb fuq il-bord, u jien ser jiddettaw kif ukoll. 169 00:08:02,505 --> 00:08:12,093 DAN BRADLEY: cs50.net/spaces-- 170 00:08:12,093 --> 00:08:12,580 LEXI ROSS: / qWLc - 171 00:08:12,580 --> 00:08:13,830 Jien sorry, y. 172 00:08:18,806 --> 00:08:20,790 DAN BRADLEY: Y?. 173 00:08:20,790 --> 00:08:21,290 LEXI ROSS: No, no, no, no. 174 00:08:21,290 --> 00:08:22,540 Li l-multa. 175 00:08:26,088 --> 00:08:27,338 qYLcYWfg. 176 00:08:38,590 --> 00:08:41,150 So I għandha tara kulħadd ismijiet tip ta 'popping up here. 177 00:08:41,150 --> 00:08:41,350 >> Tal-biża '. 178 00:08:41,350 --> 00:08:42,209 Dan jidher kbir. 179 00:08:42,209 --> 00:08:44,700 Dan ifisser nies qed jingħaqdu l-ispazju. 180 00:08:44,700 --> 00:08:46,130 Mela jekk inti ma gotten ċans jilagħbu madwar 181 00:08:46,130 --> 00:08:47,990 Spazji għadhom, dan huwa attwalment dak li int se tkun qed tuża 182 00:08:47,990 --> 00:08:50,750 mal-TFS tiegħek fis-sezzjoni kollha semestru. 183 00:08:50,750 --> 00:08:52,810 Kif taħdem hija tip ta 'kulħadd jikteb tagħhom stess 184 00:08:52,810 --> 00:08:56,510 , il-kodiċi u ħadd jista 'jara sakemm inti agħfas il-Save 185 00:08:56,510 --> 00:08:59,284 buttuna, li jien tipponta lejn id-dritt issa. 186 00:08:59,284 --> 00:09:03,140 Allura jien ser istampa Ħlief, u jekk inti kollha jmorru għall-isem tiegħi, 187 00:09:03,140 --> 00:09:06,670 li inti għandek tkun kapaċi li tara fil Nies f'dan 188 00:09:06,670 --> 00:09:09,510 Ispazju, li huwa Lexis Beryl Ross. 189 00:09:09,510 --> 00:09:12,790 Allura kif li għaddej biex tfittex huwa inti ikklikkja fuq l-isem tiegħi, u 190 00:09:12,790 --> 00:09:15,170 int ser tara Reviżjoni 5, li 191 00:09:15,170 --> 00:09:16,070 huwa l-aħħar reviżjoni. 192 00:09:16,070 --> 00:09:18,930 Kopja biss Reviżjoni 5 fl-ispazju tiegħek billi tikklikkja fuqha. 193 00:09:22,570 --> 00:09:23,420 >> Kull dritt. 194 00:09:23,420 --> 00:09:27,310 Mela ejja jmorru permezz din il-problema flimkien, u jien 195 00:09:27,310 --> 00:09:29,645 fil-fatt se jikteb il-kodiċi up hawn fuq l-iskrin. 196 00:09:29,645 --> 00:09:31,420 Tista zoom fi ftit. 197 00:09:31,420 --> 00:09:34,300 U mbagħad darba jien jsir, inti tista 'kopja aħħar reviżjoni tiegħi 198 00:09:34,300 --> 00:09:37,930 fl-ispazju tiegħek, jekk inti tixtieq li tara s-soluzzjoni finali. 199 00:09:37,930 --> 00:09:41,840 Issa, Spazji għandha l-kapaċità għalija li jmorru fi u tara l-ebda ta ' 200 00:09:41,840 --> 00:09:43,910 il-kodiċi li inti guys jkollhom miktub, iżda biss għaliex dan huwa 201 00:09:43,910 --> 00:09:46,470 tali sezzjoni kbira u aħna ma verament ikollhom l-istess 202 00:09:46,470 --> 00:09:50,150 tip ta 'kapaċitajiet diskussjoni bħala iżgħar 203 00:09:50,150 --> 00:09:51,890 taqsima, aħna qed biss se jmorru permezz ta 'u jien biss se 204 00:09:51,890 --> 00:09:53,140 biex jikteb il-kodiċi. 205 00:09:53,140 --> 00:09:55,250 Imma żgur stop me ma mistoqsijiet fi kwalunkwe punt. 206 00:09:55,250 --> 00:09:57,290 Aħna ser jgħaddu minnha tip ta 'pass pass biex jagħmlu 207 00:09:57,290 --> 00:10:00,032 żgur aħna nifhmu kull parti tal x'inhu għaddej hawn. 208 00:10:03,800 --> 00:10:06,710 Tista 'kulħadd jara dan it-test hawn? 209 00:10:06,710 --> 00:10:07,960 Hawn xi ħadd jixtiequ akbar? 210 00:10:10,240 --> 00:10:12,860 >> Allura x'inhu l-ewwel ħaġa li aħna qed tmur biex tagħmel hawn? 211 00:10:12,860 --> 00:10:14,840 Ukoll essenzjalment, peress li aħna rridu nġibu input mill- 212 00:10:14,840 --> 00:10:17,460 utent u aħna tixtieq li jkun it-tip ta 'esperjenza tajba għall- 213 00:10:17,460 --> 00:10:19,750 utent, aħna fil-fatt tixtieq li jgħidulhom dak li aħna qed tfittex. 214 00:10:19,750 --> 00:10:23,120 Mela ejja jistampa eżattament dak li rridu forma l-utent. 215 00:10:23,120 --> 00:10:26,540 Hekk biss ma jolqot kuxjenza naħa tiegħek, just Rattle off. 216 00:10:26,540 --> 00:10:29,210 X'inhu l-kmand li jistampaw xi ħaġa għall-iskrin? 217 00:10:29,210 --> 00:10:30,100 UDJENZA:. Printf 218 00:10:30,100 --> 00:10:31,247 LEXI ROSS: Tal-biża '. 219 00:10:31,247 --> 00:10:33,393 Okay, hekk printf. 220 00:10:33,393 --> 00:10:34,339 >> UDJENZA: Ħej, Lexi? 221 00:10:34,339 --> 00:10:35,589 [Inaudible]? 222 00:10:39,080 --> 00:10:40,130 LEXI ROSS: Sure. 223 00:10:40,130 --> 00:10:43,580 Allura printf, kif aħna stajt tidher ta 'spiss fil-lecture, huwa l- 224 00:10:43,580 --> 00:10:47,230 kmand li jistampaw xi ħaġa li l-fluss produzzjoni standard. 225 00:10:47,230 --> 00:10:52,370 Allura aħna tixtieq li tistaqsi lill-utent għall-input ta ' 226 00:10:52,370 --> 00:10:53,620 temperatura fil Celsius. 227 00:10:58,180 --> 00:11:01,180 U issa, aħna fil-fatt tixtieq li tieħu l-input li jagħtu 228 00:11:01,180 --> 00:11:03,710 magħna u jaħżnu ġo varjabbli. 229 00:11:03,710 --> 00:11:06,415 Allura aħna ve tgħallmu ftit dwar it-tipi. 230 00:11:06,415 --> 00:11:12,090 Jista xi ħadd ftakar liema tip aħna rridu għal varjabbli 231 00:11:12,090 --> 00:11:13,170 ma 'post deċimali fiha? 232 00:11:13,170 --> 00:11:13,910 UDJENZA: float. 233 00:11:13,910 --> 00:11:14,180 LEXI ROSS: float. 234 00:11:14,180 --> 00:11:15,480 Yeah,. Biża 235 00:11:15,480 --> 00:11:16,510 Huwa float. 236 00:11:16,510 --> 00:11:17,760 Allura. 237 00:11:21,860 --> 00:11:24,953 U kif huma aħna se - ħjiel big - jiksbu l- 238 00:11:24,953 --> 00:11:25,430 float mill-utent? 239 00:11:25,430 --> 00:11:25,923 UDJENZA: GetFloat. 240 00:11:25,923 --> 00:11:27,173 LEXI ROSS: Yeah. 241 00:11:33,320 --> 00:11:34,730 Kessaħ. 242 00:11:34,730 --> 00:11:38,970 U l-utent jistgħu jiġu potenzjalment jfisser u jippruvaw tagħtina 243 00:11:38,970 --> 00:11:41,080 numru negattiv, imma ejja ma joqogħdu jinkwetaw dwar li għal dan il- 244 00:11:41,080 --> 00:11:41,710 problema issa. 245 00:11:41,710 --> 00:11:43,390 Int ser joqogħdu jinkwetaw dwar li ftit aktar fuq tiegħek 246 00:11:43,390 --> 00:11:45,570 homework fuq is-sett problema. 247 00:11:45,570 --> 00:11:48,970 >> Mela ejja jassumi li tagħtina numru tajjeb, u issa aħna 248 00:11:48,970 --> 00:11:51,590 attwalment ikollhom jikkonvertu dak float minn Celsius għal 249 00:11:51,590 --> 00:11:52,400 Fahrenheit. 250 00:11:52,400 --> 00:11:56,730 Mela ejja tikkonsulta formula tagħna up hawn, u ejja joħolqu 251 00:11:56,730 --> 00:12:00,290 varjabbli ġodda u sejħa hija Fahrenheit. 252 00:12:00,290 --> 00:12:01,130 I studjat l-ortografija. 253 00:12:01,130 --> 00:12:04,640 Huwa tip ta 'crazy, I know. 254 00:12:04,640 --> 00:12:08,880 U ejja joqgħod fuq l-ordni ta 'operazzjonijiet li tip ta' jagħmel 255 00:12:08,880 --> 00:12:14,340 xogħol tagħha hawnhekk, imma aħna ser tuża parentesi biss li jkun 256 00:12:14,340 --> 00:12:17,762 kompletament verbose u ċara. 257 00:12:17,762 --> 00:12:24,453 Allura Celsius drabi 9 diviż bil 5. 258 00:12:24,453 --> 00:12:26,740 Jien ser zoom out biss ftit sabiex dan jistgħu joqogħdu fuq 259 00:12:26,740 --> 00:12:29,390 linja waħda, imma jien ser zoom fl-ġdid għal dawk li ma tistax tara, 260 00:12:29,390 --> 00:12:30,640 farther fid-dahar. 261 00:12:38,150 --> 00:12:40,060 Jiddispjacini dwar dan. 262 00:12:40,060 --> 00:12:42,680 Kwistjonijiet cursor Strange. 263 00:12:42,680 --> 00:12:51,688 Plus 32. 264 00:12:51,688 --> 00:12:54,780 Okay, ħadd ma jkollu xi mistoqsijiet dwar kif nressaq fil 265 00:12:54,780 --> 00:12:56,460 il-formula, jew kwalunkwe kwistjonijiet ma 'dak? 266 00:12:56,460 --> 00:12:56,700 Yeah. 267 00:12:56,700 --> 00:12:59,580 >> UDJENZA: Do neħtieġu npoġġu printf qabel il-galleġġjant 268 00:12:59,580 --> 00:13:01,980 Celsius, float linji iskrittura Fahrenheit? 269 00:13:01,980 --> 00:13:05,910 Ma jimpurtax liema ordni li qed fl? 270 00:13:05,910 --> 00:13:08,580 LEXI ROSS: Għalhekk il-kwistjoni kienet, għandna bżonn li printf 271 00:13:08,580 --> 00:13:11,820 qabel we attwalment jistaqsu għall-float? 272 00:13:11,820 --> 00:13:13,070 It-tweġiba hija li nagħmlu. 273 00:13:13,070 --> 00:13:16,830 B'dan il-mod, li l-cursor li l-utent gets biex l-kontribut tagħhom 274 00:13:16,830 --> 00:13:20,310 float ser iseħħu wara l-c stampat, id-dritt? 275 00:13:20,310 --> 00:13:23,480 U jagħmel sens jekk taħseb dwar loġikament, bħal 276 00:13:23,480 --> 00:13:26,660 int tistaqsi lill-utent mistoqsija, u allura int 277 00:13:26,660 --> 00:13:27,800 jirċievu risposta. 278 00:13:27,800 --> 00:13:30,320 Għalhekk prints c, u allura hemm cursor, allura l- 279 00:13:30,320 --> 00:13:32,470 utent tista 'tip fil-valur, kif aħna ser tara 280 00:13:32,470 --> 00:13:34,200 aktar tard meta aħna demo. 281 00:13:34,200 --> 00:13:34,874 Iva? 282 00:13:34,874 --> 00:13:37,660 >> UDJENZA: Għalfejn nagħmlu użu ta 'float u mhux doppja? 283 00:13:37,660 --> 00:13:40,030 LEXI ROSS: Allura doppja, essenzjalment, bħala l-isem 284 00:13:40,030 --> 00:13:42,180 jimplika, jagħtina jirduppjaw l-ammont ta ' 285 00:13:42,180 --> 00:13:44,040 preċiżjoni bħala float. 286 00:13:44,040 --> 00:13:48,490 Iżda tipikament fis-C, f'dan il-kors, għal numru ta ' 287 00:13:48,490 --> 00:13:50,340 raġunijiet, aħna qed tmur għall-użu flowts. 288 00:13:50,340 --> 00:13:53,330 U dan huwa verament kollha l-preċiżjoni għandna bżonn biss għall- 289 00:13:53,330 --> 00:13:56,200 tip ta 'konverżjonijiet temperatura bażiċi. 290 00:13:56,200 --> 00:13:59,800 Tipikament, jirdoppja huma aktar użati fil-lingwa Java, 291 00:13:59,800 --> 00:14:05,700 sufruni huma aktar komuni fl C. Kull dritt, biża '. 292 00:14:05,700 --> 00:14:06,470 >> DAN BRADLEY: Wieħed aktar. 293 00:14:06,470 --> 00:14:07,530 LEXI ROSS: Wieħed aktar. 294 00:14:07,530 --> 00:14:08,708 Iva? 295 00:14:08,708 --> 00:14:10,684 UDJENZA: Meta inti tpoġġi l-Avukatura Ispazju? 296 00:14:10,684 --> 00:14:13,648 Bħal, [inaudible] l-Avukatura Ispazju [inaudible]? 297 00:14:13,648 --> 00:14:15,140 Ma jimpurtax? 298 00:14:15,140 --> 00:14:15,560 LEXI ROSS: Oh, no. 299 00:14:15,560 --> 00:14:17,040 Allura ma jimpurtax. 300 00:14:17,040 --> 00:14:19,910 I attwalment għandhom poġġew ieħor ispazju hawn. 301 00:14:19,910 --> 00:14:21,990 Imma dak ma jimpurtax hija li int konsistenti 302 00:14:21,990 --> 00:14:22,960 matul kodiċi tiegħek. 303 00:14:22,960 --> 00:14:25,510 Mela jekk inti tiddeċiedi li tuża wieħed istil ta 'spazjar, kun żgur li 304 00:14:25,510 --> 00:14:27,530 jżommha matul il-kodiċi tiegħek kollu, jew inti tista 'tikseb l-istil 305 00:14:27,530 --> 00:14:28,610 punti mnaqqsa. 306 00:14:28,610 --> 00:14:29,822 Allura l-konsistenza hija essenzjali. 307 00:14:29,822 --> 00:14:31,590 DAN BRADLEY: Naħseb li kien jitkellem dwar dak l-ispazju. 308 00:14:31,590 --> 00:14:33,190 LEXI ROSS: Oh, inti qed jitkellem dwar dak l-ispazju? 309 00:14:33,190 --> 00:14:34,920 Mill-C attwali? 310 00:14:34,920 --> 00:14:35,335 UDJENZA: Yeah. 311 00:14:35,335 --> 00:14:37,910 LEXI ROSS: Oh, hekk li biss għall jistenna, id-dritt? 312 00:14:37,910 --> 00:14:41,280 Allura li l-mod meta aħna run-kodiċi, jekk aħna ma kellhomx din 313 00:14:41,280 --> 00:14:43,730 ispazju hawn, jekk dehru qishom dan, l-utent se tibda 314 00:14:43,730 --> 00:14:45,690 ittajpjar fin-numru u jkun squashed up dritt 315 00:14:45,690 --> 00:14:48,800 kontra l-kolon wara l-C, u hija kienet ser tfittex ftit 316 00:14:48,800 --> 00:14:50,770 aħjar jekk kien hemm spazju. 317 00:14:50,770 --> 00:14:52,470 U inti tista 'tara li ftit aħjar meta aħna fil-fatt 318 00:14:52,470 --> 00:14:53,970 run dan il-kodiċi, meta aħna ġġibu lest. 319 00:14:57,060 --> 00:14:58,200 Tal-biża '. 320 00:14:58,200 --> 00:14:59,330 Yeah, mistoqsija waħda aktar. 321 00:14:59,330 --> 00:15:01,658 >> UDJENZA: Għandi li jitqiegħed punt deċimali wara waħda mill- 322 00:15:01,658 --> 00:15:04,000 [Inaudible]? 323 00:15:04,000 --> 00:15:06,770 LEXI ROSS: Allura inti ma, minħabba l-ordni ta ' 324 00:15:06,770 --> 00:15:07,500 operazzjonijiet. 325 00:15:07,500 --> 00:15:11,020 Allura għaliex Fahrenheit diġà huwa float, kif 326 00:15:11,020 --> 00:15:14,050 Celsius, inti m'għandekx bżonn li espliċitament jitfa xi wieħed minn dawn 327 00:15:14,050 --> 00:15:15,990 numri oħra kif sufruni, għalkemm fil-oħra 328 00:15:15,990 --> 00:15:18,180 ċirkostanzi, meta int jittrattaw ints, inti tista ' 329 00:15:18,180 --> 00:15:21,280 għandek tpoġġi punt li espliċitament jitfa bħala float. 330 00:15:24,160 --> 00:15:24,595 Yeah? 331 00:15:24,595 --> 00:15:26,629 UDJENZA: I kien biss jekk mintix kwistjonijiet kapitalizzazzjoni fis 332 00:15:26,629 --> 00:15:29,150 dawn il-kmandijiet bħal GetFloat? 333 00:15:29,150 --> 00:15:30,160 LEXI ROSS: Yeah, mistoqsija tajba. 334 00:15:30,160 --> 00:15:33,530 Għalhekk il-kwistjoni kienet, ma jimpurtax kapitalizzazzjoni fis 335 00:15:33,530 --> 00:15:34,800 jikkmanda bħal GetFloat? 336 00:15:34,800 --> 00:15:36,650 It-tweġiba hija iva, ma. 337 00:15:36,650 --> 00:15:39,720 Allura GetFloat huwa, kif ġie Dan jiddeskrivi qabel, librerija 338 00:15:39,720 --> 00:15:44,000 funzjoni fil-librerija CS50, u kien miktub bħala kapital 339 00:15:44,000 --> 00:15:47,360 G, kapital F. Mela jekk inti ma jiktbu ma 'dawk kapitali 340 00:15:47,360 --> 00:15:50,150 hemm, l-kumpilatur mhux se jifhmu dak 341 00:15:50,150 --> 00:15:52,750 funzjoni int jirreferu għall. 342 00:15:52,750 --> 00:15:53,130 Okay. 343 00:15:53,130 --> 00:15:53,815 Yeah? 344 00:15:53,815 --> 00:15:55,446 >> UDJENZA: Huwa l-argument għall-prinċipali dejjem vojt? 345 00:15:55,446 --> 00:15:57,920 LEXI ROSS: Yeah, li l-ieħor kwistjoni kbira. 346 00:15:57,920 --> 00:16:01,850 Allura l-kodiċi li inti kkupjati mill-ispazju tiegħi żbaljat kellhom 347 00:16:01,850 --> 00:16:02,500 argumenti xi aktar. 348 00:16:02,500 --> 00:16:06,530 Għalhekk il-kwistjoni kienet, hija l-argument li l-funzjoni prinċipali 349 00:16:06,530 --> 00:16:10,620 dejjem vojt, li essenzjalment ifisser xejn? 350 00:16:10,620 --> 00:16:11,890 It-tweġiba hija le. 351 00:16:11,890 --> 00:16:13,920 Tista 'tinnota li l-kodiċi inti kkupjati mill preċedenti tiegħi 352 00:16:13,920 --> 00:16:17,700 reviżjoni kellhom dak li jista 'look like xejn li verament jagħmel 353 00:16:17,700 --> 00:16:21,060 sens id-dritt issa, xi * char, ARGV, argc. 354 00:16:21,060 --> 00:16:23,630 Ma joqogħdu jinkwetaw dwar li għal issa, imma inti ser issir taf iktar tard 355 00:16:23,630 --> 00:16:25,060 fuq dawn ma jagħmlu differenza. 356 00:16:25,060 --> 00:16:27,480 Imma jekk ma tkunx qed tużah dik it-tip ta 'funzjonalità miżjud 357 00:16:27,480 --> 00:16:28,940 li inti ser jitgħallmu dwar aktar tard, null 358 00:16:28,940 --> 00:16:32,085 huwa kompletament multa. 359 00:16:32,085 --> 00:16:32,530 >> Kull dritt. 360 00:16:32,530 --> 00:16:34,690 U aħna għandna pass aktar, li huwa li rridu 361 00:16:34,690 --> 00:16:38,840 fil-fatt juru l-utent dak it-temperatura ikkonvertit huwa. 362 00:16:38,840 --> 00:16:46,730 Għalhekk għal darb'oħra, aħna qed tmur għall-użu printf, u ejja ngħidu f, biss 363 00:16:46,730 --> 00:16:48,000 f'ġieħ il-konsistenza tal. 364 00:16:48,000 --> 00:16:50,780 U issa aħna qed tmur biex tagħmel xi ħaġa ftit delikata. 365 00:16:50,780 --> 00:16:57,190 Allura aħna qed tmur biex tuża bandiera, jew tip speċjali ta 'notazzjoni, 366 00:16:57,190 --> 00:17:02,510 li tgħid printf biss jistampaw post deċimali wieħed. 367 00:17:02,510 --> 00:17:05,240 U ħadd ma jiġri li tkun taf dak li għaddej biex tħares 368 00:17:05,240 --> 00:17:06,810 simili, qabel I tip out? 369 00:17:06,810 --> 00:17:07,089 Yeah? 370 00:17:07,089 --> 00:17:08,339 UDJENZA: f 0.2%? 371 00:17:10,369 --> 00:17:10,880 LEXI ROSS: Yeah, yeah. 372 00:17:10,880 --> 00:17:12,960 Allura fil-fatt, huwa verament qrib. 373 00:17:12,960 --> 00:17:23,520 0.01f għal f .01%, u allura għandna niftakru li jinkludu 374 00:17:23,520 --> 00:17:26,950 l-argument ieħor li printf, li hija l-varjabbli innifsu, 375 00:17:26,950 --> 00:17:28,685 li huwa n. 376 00:17:33,690 --> 00:17:34,580 >> Wieħed aħħar pass. 377 00:17:34,580 --> 00:17:36,880 Jista xi ħadd ftakar dak li huwa fil-funzjoni ewlenija tagħna? 378 00:17:36,880 --> 00:17:37,265 Yeah, up hemm. 379 00:17:37,265 --> 00:17:38,320 UDJENZA: Ritorn? 380 00:17:38,320 --> 00:17:38,840 LEXI ROSS: Eżattament. 381 00:17:38,840 --> 00:17:42,030 Allura peress li dan huwa prospetti ewlenin fil int, irridu 382 00:17:42,030 --> 00:17:43,926 wkoll ritorn fil int. 383 00:17:43,926 --> 00:17:48,280 DAN BRADLEY: Perċentwali jeħtieġ li jkun fuq in-naħa l-oħra. 384 00:17:48,280 --> 00:17:48,540 LEXI ROSS: Okay. 385 00:17:48,540 --> 00:17:49,290 Jiddispjacini, guys. 386 00:17:49,290 --> 00:17:50,240 Dan kien żball. 387 00:17:50,240 --> 00:17:52,150 Allura fil-mija jasal quddiem 0.01. 388 00:17:52,150 --> 00:17:54,450 Għalhekk huwa% .01 f. 389 00:17:54,450 --> 00:17:55,970 Dawk huma tip ta 'diffiċli li wieħed jiftakru. 390 00:17:55,970 --> 00:17:57,470 Ħafna nies, bħali, biss ħarsa up 391 00:17:57,470 --> 00:17:58,710 kull meta aħna jużawhom. 392 00:17:58,710 --> 00:17:59,340 Yeah, up hemm. 393 00:17:59,340 --> 00:18:02,525 UDJENZA: Għaliex huwa 0.01 u mhux 0.2 jew 0.1? 394 00:18:05,710 --> 00:18:07,530 LEXI ROSS: I do not know, fil-fatt. 395 00:18:07,530 --> 00:18:08,130 Taf? 396 00:18:08,130 --> 00:18:14,050 DAN BRADLEY: Ir-raġuni huwa 0.01 għall-kuntrarju 0.02, jew 397 00:18:14,050 --> 00:18:19,380 0.2, jew 0.1, huwa pjuttost arbitrarja għall-mod li l- 398 00:18:19,380 --> 00:18:21,230 programmer oriġinarjament maħsuba għaliha. 399 00:18:21,230 --> 00:18:22,200 UDJENZA: Li mhux dak I fisser. 400 00:18:22,200 --> 00:18:24,140 Jien ma titlob ir-raġuni. 401 00:18:24,140 --> 00:18:25,378 [Inaudible] raġuni għaliex. 402 00:18:25,378 --> 00:18:28,800 I jkollhom miktub bħala 0.2, u li tagħti żewġ - 403 00:18:28,800 --> 00:18:29,270 DAN BRADLEY: Yeah. 404 00:18:29,270 --> 00:18:30,410 Allura konna biss jixtiequ wieħed. 405 00:18:30,410 --> 00:18:31,250 UDJENZA: Oh, Okay. 406 00:18:31,250 --> 00:18:33,270 Allura inti tista '0.01 imbagħad. 407 00:18:33,270 --> 00:18:35,340 DAN BRADLEY: 0.1 probabbilment wkoll ix-xogħol. 408 00:18:35,340 --> 00:18:37,430 0.01 jaħdem ukoll. 409 00:18:37,430 --> 00:18:39,288 LEXI ROSS: Oh, il-0 jista 'jkun li juri żero, jekk 410 00:18:39,288 --> 00:18:40,870 huwa anqas minn wieħed. 411 00:18:40,870 --> 00:18:43,080 DAN BRADLEY: Yeah, naħseb li hija tajba. 412 00:18:43,080 --> 00:18:49,220 Allura l-0.01 turi żero jekk dan ma jkollhom xejn 413 00:18:49,220 --> 00:18:51,670 li jmorru hemm naturalment. 414 00:18:51,670 --> 00:18:55,860 Mela jekk inti kienu, jiġifieri, tqegħid fil 100 għall Celsius, ikun 415 00:18:55,860 --> 00:19:00,230 toħroġ sa 212 normalment Fahrenheit, bħal 212 eżattament. 416 00:19:00,230 --> 00:19:05,810 Jekk inti għandek il-0.01, ser juru 212.0, kif 417 00:19:05,810 --> 00:19:07,005 kuntrarju biss 212. 418 00:19:07,005 --> 00:19:07,330 LEXI ROSS: Dak id-dritt. 419 00:19:07,330 --> 00:19:13,000 Allura qari tagħha bażikament jgħid printf, stampar ta 'punt deċimali, 420 00:19:13,000 --> 00:19:14,760 u tistampa 0 jekk ikun meħtieġ. 421 00:19:14,760 --> 00:19:16,780 Jekk le, jistampa l-pożizzjoni deċimali. 422 00:19:16,780 --> 00:19:18,270 DAN BRADLEY: U aħna ser tesplora xi wħud minn din meta nkunu 423 00:19:18,270 --> 00:19:19,270 attwalment taħdem il-kodiċi. 424 00:19:19,270 --> 00:19:20,150 LEXI ROSS: Yeah. 425 00:19:20,150 --> 00:19:21,030 UDJENZA: So I jitpoġġew 0.1. 426 00:19:21,030 --> 00:19:21,910 Hija xorta prints żero tagħha. 427 00:19:21,910 --> 00:19:23,460 DAN BRADLEY: Hija xorta prints zero tagħha? 428 00:19:23,460 --> 00:19:23,930 UDJENZA: Yeah. 429 00:19:23,930 --> 00:19:25,211 DAN BRADLEY: Hm, okay. 430 00:19:25,211 --> 00:19:27,666 LEXI ROSS: Kessaħ. 431 00:19:27,666 --> 00:19:29,140 >> Kull dritt. 432 00:19:29,140 --> 00:19:33,310 Mistoqsijiet Aktar dwar dan il-kodiċi qabel I jikkompilaw u run? 433 00:19:33,310 --> 00:19:35,380 Hawn xi ħadd tara l-ebda bugs hawn, l-ewwel nett? 434 00:19:35,380 --> 00:19:39,420 Kulħadd tara xi ħaġa li għandha jkun hawn? 435 00:19:39,420 --> 00:19:41,920 Jekk dan kien stabbilit l-problema tiegħek, x'għandhom ikunu hawnhekk li mhix 436 00:19:41,920 --> 00:19:44,490 hemm dritt issa? 437 00:19:44,490 --> 00:19:45,710 Yeah, kbir. 438 00:19:45,710 --> 00:19:48,200 So I ma kinux jinkludu kummenti għaliex jien twettiq minnhom 439 00:19:48,200 --> 00:19:50,570 oralment, imma jekk jien kienu bil-miktub dan f'sett problema, jiena 440 00:19:50,570 --> 00:19:54,290 definittivament tixtieq li tqiegħed l-kummenti li jindikaw dak li jien 441 00:19:54,290 --> 00:19:55,820 tagħmel, essenzjalment, fil-programm. 442 00:19:55,820 --> 00:19:57,870 U tkun taf it-tip ta tikseb jħossu għal dan, kif inti timxi permezz 443 00:19:57,870 --> 00:19:59,680 il-semestru, l-ammont korrett ta 'kummentarju. 444 00:19:59,680 --> 00:20:01,520 Inti ma tridx wisq verbose u linji li ddaħħlu u 445 00:20:01,520 --> 00:20:03,710 linji ta 'kummenti għal kull ta' linji tiegħek ta 'kodiċi, iżda inti 446 00:20:03,710 --> 00:20:06,720 wkoll ma jridux ikun verbose biżżejjed u jħallu l- 447 00:20:06,720 --> 00:20:09,440 qarrej biex tipprova ċifra barra dak l-Heck 448 00:20:09,440 --> 00:20:11,595 Kodiċi tiegħek qed tagħmel. 449 00:20:11,595 --> 00:20:12,770 >> Okay, berred. 450 00:20:12,770 --> 00:20:14,020 Ejja nippruvaw running dan il-kodiċi. 451 00:20:18,290 --> 00:20:21,650 Okay, jien ser zoom out ftit. 452 00:20:21,650 --> 00:20:22,020 Kessaħ. 453 00:20:22,020 --> 00:20:24,560 Allura inti taf Avviż hemm buttuna Play hawn. 454 00:20:24,560 --> 00:20:25,994 Ejja ikklikkja Play. 455 00:20:34,915 --> 00:20:39,190 Allura inti taf Avviż hawn, bħal fil-spec fuq il-problema 456 00:20:39,190 --> 00:20:43,300 stabbiliti, hemm il-. / a.out. 457 00:20:43,300 --> 00:20:46,510 a.out huwa l-isem ta 'l-eżekutibbli binarju, li huwa 458 00:20:46,510 --> 00:20:50,590 kelma twila għall biss f'dokument ta 'kodiċi binarju li 459 00:20:50,590 --> 00:20:51,710 kompjuter tiegħek huwa attwalment taħdem. 460 00:20:51,710 --> 00:20:54,390 Allura kif aħna mistennija, għandna C hawn. 461 00:20:54,390 --> 00:20:56,007 Allura sejħa out numru. 462 00:20:56,007 --> 00:20:58,630 UDJENZA: 23. 463 00:20:58,630 --> 00:21:05,090 LEXI ROSS: 23. 464 00:21:05,090 --> 00:21:06,360 DAN BRADLEY: Program tiegħek ħa wisq żmien jiddekorri. 465 00:21:06,360 --> 00:21:07,310 Just run mill-ġdid. 466 00:21:07,310 --> 00:21:07,700 LEXI ROSS: Oh, bad tiegħi. 467 00:21:07,700 --> 00:21:09,450 Okay. 468 00:21:09,450 --> 00:21:10,770 Spazji huwa picky kultant. 469 00:21:10,770 --> 00:21:13,060 Hija trid li inti taħseb fuq saqajn tiegħek. 470 00:21:13,060 --> 00:21:15,060 Okay, 23. 471 00:21:15,060 --> 00:21:16,256 Tal-biża '. 472 00:21:16,256 --> 00:21:18,920 Ma kulħadd jemmnu dan? 473 00:21:18,920 --> 00:21:20,600 Kessaħ, minħabba li taħdem. 474 00:21:20,600 --> 00:21:22,670 >> Okay. 475 00:21:22,670 --> 00:21:24,280 Ejja nippruvaw koppja aktar. 476 00:21:24,280 --> 00:21:25,910 Ejja nippruvaw każ tarf hawnhekk. 477 00:21:25,910 --> 00:21:28,900 Fix-xjenza tal-kompjuter, meta nitkellmu dwar każijiet tarf, rridu nfissru 478 00:21:28,900 --> 00:21:33,640 każijiet għal program tiegħek jiddekorri li huma tip ta 'fuq il-ħafna 479 00:21:33,640 --> 00:21:38,430 truf ta 'inputs raġonevoli jew li kantunieri tat-test ċerti 480 00:21:38,430 --> 00:21:41,680 il-loġika fil-programm tiegħek, u dan jagħmel aktar sens meta aħna 481 00:21:41,680 --> 00:21:43,080 jagħmlu programmi aktar ikkumplikati. 482 00:21:43,080 --> 00:21:45,440 Ejja nippruvaw 0. 483 00:21:45,440 --> 00:21:45,950 Tal-biża '. 484 00:21:45,950 --> 00:21:48,460 Aħna lkoll nafu dan. 485 00:21:48,460 --> 00:21:48,745 Kessaħ. 486 00:21:48,745 --> 00:21:50,520 Kwalunkwe mistoqsijiet aktar dwar dan qabel I jiċċaqalqu 487 00:21:50,520 --> 00:21:51,930 dwar il-programm li jmiss? 488 00:21:55,560 --> 00:21:57,160 Kull dritt, biża '. 489 00:21:57,160 --> 00:22:00,066 Allura issa, aħna qed tmur biex - 490 00:22:00,066 --> 00:22:01,180 tridu biss użu tal-kompjuter tiegħi? 491 00:22:01,180 --> 00:22:01,940 DAN BRADLEY: Yeah, li faċli biżżejjed. 492 00:22:01,940 --> 00:22:06,660 >> Kull dritt, hekk se jmorru u jitkellmu dwar teħid perċentwali. 493 00:22:06,660 --> 00:22:11,440 Allura aħna qed essenzjalment, f'dan l-eżerċizzju ftit li jmiss, ser 494 00:22:11,440 --> 00:22:16,020 tieħu żewġ inputs numru sħiħ mill-utent, bit-tama għal 495 00:22:16,020 --> 00:22:21,250 mhux negattiva numeratur u tad-denominatur pożittiv, u 496 00:22:21,250 --> 00:22:24,410 bażikament jqassmuhom u outputting dak li toħroġ barra bħala 497 00:22:24,410 --> 00:22:25,820 perċentwali. 498 00:22:25,820 --> 00:22:33,430 Allura irridu li jaċċettaw biss mhux negattivi numeraturi u 499 00:22:33,430 --> 00:22:37,930 jaċċettaw biss denominaturi pożittivi, u jżommu tistaqsi 500 00:22:37,930 --> 00:22:43,286 għal oħrajn ġodda jekk ma gotten dak li trid. 501 00:22:43,286 --> 00:22:43,710 Kull dritt? 502 00:22:43,710 --> 00:22:44,960 Allura tagħti li jmorru. 503 00:22:48,015 --> 00:22:49,390 LEXI ROSS: Oh yeah, inti trid tagħmel l - 504 00:22:49,390 --> 00:22:51,310 oh, forsi in-nies għandhom kopja kodiċi tiegħi. 505 00:22:51,310 --> 00:22:51,790 DAN BRADLEY: Yeah. 506 00:22:51,790 --> 00:22:52,270 LEXI ROSS: [inaudible] 507 00:22:52,270 --> 00:22:54,994 Spazji. 508 00:22:54,994 --> 00:22:55,986 >> UDJENZA: ikolli mistoqsija. 509 00:22:55,986 --> 00:22:58,466 Jekk jien jużaw Spazji u nixtieq li jiffrankaw [inaudible] il- 510 00:22:58,466 --> 00:23:04,440 Fahrenheit konverżjoni, nista ħlief u mbagħad tagħmel ġdid - 511 00:23:04,440 --> 00:23:06,880 LEXI ROSS: Aħna tista 'biss tagħmel Ispazju ġdid, jew inti tista' biss 512 00:23:06,880 --> 00:23:09,600 tixtieq li kopja u paste biex fajl test jew 513 00:23:09,600 --> 00:23:11,040 xi ħaġa hekk ikollok. 514 00:23:11,040 --> 00:23:12,400 DAN BRADLEY: jien ser biss bidla fl-isem tiegħi. 515 00:23:12,400 --> 00:23:15,430 LEXI ROSS: So I biss ffrankati l-aħħar reviżjoni ta ' 516 00:23:15,430 --> 00:23:20,700 tofahrenheit.c, hekk jekk inti tmur fis AAAA Lexis Beryl 517 00:23:20,700 --> 00:23:23,270 Ross, inti tista 'tmur fi u kopja li kodiċi aktar tard, u imbagħad 518 00:23:23,270 --> 00:23:26,360 jibdew fuq dan wieħed ġdid, li naħseb Dan se jipprovdi 519 00:23:26,360 --> 00:23:30,540 xi kodiċi skeletru għall ukoll. 520 00:23:30,540 --> 00:23:33,430 Okay. 521 00:23:33,430 --> 00:23:36,590 DAN BRADLEY: L-aħħar reviżjoni nkun fuq minjiera, sabiex 522 00:23:36,590 --> 00:23:40,080 huwa fuq nett dan iż-żmien, huwa Reviżjoni 4, u 523 00:23:40,080 --> 00:23:42,050 dan ser ikollhom dak li għandek bżonn biex tibda. 524 00:23:47,970 --> 00:23:49,370 LEXI ROSS: Kull dritt, u jien ser kopja li fis minjiera ukoll. 525 00:23:49,370 --> 00:23:50,520 >> DAN BRADLEY: Kull dritt. 526 00:23:50,520 --> 00:23:53,840 Naħseb li aħna qed tmur biex tibda biss jmorru fuq dan, jekk 527 00:23:53,840 --> 00:23:57,470 kull min hu interessat. 528 00:23:57,470 --> 00:23:59,710 LEXI ROSS: Aħna kollha interessati. 529 00:23:59,710 --> 00:24:02,370 DAN BRADLEY: Aħna ser tibda biss billi tiddikjara 530 00:24:02,370 --> 00:24:08,290 xi varjabbli. Allura aħna għandna numeratur, u għall-fini ta ' 531 00:24:08,290 --> 00:24:13,770 Issa, jien ser biss tibda bil-valur -1, 532 00:24:13,770 --> 00:24:24,070 u mbagħad I ser twaqqaf loop do-waqt. Filwaqt - 533 00:24:24,070 --> 00:24:28,270 hekk meta għandi tixtieq li loop? 534 00:24:28,270 --> 00:24:30,250 Meta ma nixtieq li jżommu tistaqsi - 535 00:24:30,250 --> 00:24:31,761 yeah? 536 00:24:31,761 --> 00:24:34,960 UDJENZA: Meta huwa inqas minn jew ugwali għal żero. 537 00:24:34,960 --> 00:24:37,734 DAN BRADLEY: Għaliex ma jista 'jkun ugwali għal żero? 538 00:24:37,734 --> 00:24:39,526 UDJENZA: [inaudible]. 539 00:24:39,526 --> 00:24:39,980 DAN BRADLEY: Yeah. 540 00:24:39,980 --> 00:24:42,590 Allura għall-numeratur, huwa biss waqt li l-numeratur 541 00:24:42,590 --> 00:24:43,840 tkun inqas minn żero. 542 00:24:49,570 --> 00:24:50,480 Does li jagħmel sens li n-nies? 543 00:24:50,480 --> 00:24:53,190 Aħna nżommu looping filwaqt li l-numeratur huwa anqas minn żero, 544 00:24:53,190 --> 00:24:58,530 inżommu titlob għall-input ġodda, u jżommu eżiġenti li 545 00:24:58,530 --> 00:24:59,520 input affarijiet ġodda. 546 00:24:59,520 --> 00:25:10,436 So I ser ikollu biss ftit printf fil hawn, mhux negattiva 547 00:25:10,436 --> 00:25:11,686 num -. 548 00:25:17,780 --> 00:25:21,940 U allura nagħmlu l-istess ħaġa bħal qabel, ħlief nagħmlu 549 00:25:21,940 --> 00:25:25,220 GetInt, sempliċement minħabba ridna li tagħmel dan bħala 550 00:25:25,220 --> 00:25:27,600 perċentwali ta 'ints. 551 00:25:27,600 --> 00:25:32,010 Allura numeratur = GetInt. 552 00:25:36,420 --> 00:25:39,420 >> Okay, issa ftit affarijiet. 553 00:25:39,420 --> 00:25:41,030 Għandi bżonn din -1 hawn? 554 00:25:41,030 --> 00:25:41,976 UDJENZA: [inaudible]. 555 00:25:41,976 --> 00:25:42,449 DAN BRADLEY: Le 556 00:25:42,449 --> 00:25:44,814 Għaliex le? 557 00:25:44,814 --> 00:25:47,440 UDJENZA: Minħabba int jkollna valur każwali mill-utent. 558 00:25:47,440 --> 00:25:48,540 DAN BRADLEY: Eżattament. 559 00:25:48,540 --> 00:25:53,540 Imma nixtieq li jkollhom id-dikjarazzjoni hawn? 560 00:25:53,540 --> 00:25:53,950 Iva. 561 00:25:53,950 --> 00:25:54,220 Għaliex? 562 00:25:54,220 --> 00:25:56,640 UDJENZA: Int għandek issib l-barra tal-linja. 563 00:25:56,640 --> 00:25:59,060 Inkella, int mhux se jkollhom l-varjabbli għall-bqija 564 00:25:59,060 --> 00:26:00,520 tal-programm. 565 00:26:00,520 --> 00:26:01,270 DAN BRADLEY: Eżattament. 566 00:26:01,270 --> 00:26:03,290 Kamp ta 'applikazzjoni. 567 00:26:03,290 --> 00:26:04,750 Sweet. 568 00:26:04,750 --> 00:26:05,790 Does li jagħmel sens għal kulħadd? 569 00:26:05,790 --> 00:26:07,090 UDJENZA: Tista 'tgħid li darba aktar? 570 00:26:07,090 --> 00:26:07,410 DAN BRADLEY: Okay. 571 00:26:07,410 --> 00:26:12,000 Mela jekk jien kienu li jiddikjara dan numeratur ġewwa l-linja, jekk 572 00:26:12,000 --> 00:26:14,850 I kellha din minflok numeratur ikun numeratur int, 573 00:26:14,850 --> 00:26:17,720 u I ħassar din kompletament, 574 00:26:17,720 --> 00:26:19,710 numeratur jgħibu. 575 00:26:19,710 --> 00:26:23,540 Ma jkunx jeżisti barra ta 'dan loop, għaliex kollox 576 00:26:23,540 --> 00:26:25,370 huwa fi ħdan l-iskop ta 'dawn ċineg kaboċċi. 577 00:26:28,180 --> 00:26:28,790 Jagħmel sens? 578 00:26:28,790 --> 00:26:30,460 Okay. 579 00:26:30,460 --> 00:26:34,750 >> Allura għal denominatur, nagħmlu xi ħaġa pjuttost simili, int 580 00:26:34,750 --> 00:26:39,850 denominatur = - 581 00:26:39,850 --> 00:26:41,950 u jien ma bżonn l-daqs - 582 00:26:41,950 --> 00:26:52,900 do, u għall-filwaqt li fil-kawża preżenti, dak li nixtieq? 583 00:26:52,900 --> 00:26:56,338 What do I kundizzjoni tixtieq li għadu loop fuq? 584 00:26:56,338 --> 00:26:57,790 UDJENZA: Inqas minn jew ugwali għal 0. 585 00:26:57,790 --> 00:26:59,100 DAN BRADLEY: Inqas minn jew ugwali għal 0. 586 00:26:59,100 --> 00:27:04,680 Denominatur <= 0. 587 00:27:10,350 --> 00:27:13,630 Tinsiex semicolons tiegħek, gidjien. 588 00:27:13,630 --> 00:27:26,950 Allura aħna nagħmlu l-istess ħaġa bħal qabel, printf pożittiv 589 00:27:26,950 --> 00:27:38,920 denominatur, u nikbru int minn hawn. 590 00:27:43,240 --> 00:27:44,573 Hemm immorru. 591 00:27:52,461 --> 00:27:53,711 GetInt. 592 00:27:56,585 --> 00:27:57,810 Okay. 593 00:27:57,810 --> 00:28:02,360 U mbagħad fl-aħħar, irridu li jistampa xi persentaġġ. 594 00:28:02,360 --> 00:28:10,282 Allura biex tagħmel dan, dak li għandu string tagħna look like? 595 00:28:10,282 --> 00:28:11,532 printf. 596 00:28:18,010 --> 00:28:20,210 Xi ideat oħra ta 'dak I tista' tagħmel hawn? 597 00:28:20,210 --> 00:28:20,480 Yeah? 598 00:28:20,480 --> 00:28:26,204 UDJENZA: Forsi 0.2% [inaudible]. 599 00:28:26,204 --> 00:28:27,454 DAN BRADLEY: Yep. 600 00:28:31,300 --> 00:28:32,170 Okay. 601 00:28:32,170 --> 00:28:41,680 I ser tibda bil-ewwel ftit,%% 0.02%, 602 00:28:41,680 --> 00:28:42,957 kwotazzjonijiet, comma. 603 00:28:46,370 --> 00:28:48,380 U jien ser tarmi xi linja ġdida fil hawn, biss minħabba I 604 00:28:48,380 --> 00:28:50,390 bħal linji ġodda meta jien tagħmel l-affarijiet. 605 00:28:53,210 --> 00:28:57,945 X'tip ta 'espressjoni matematika għandu għandi hawn? 606 00:28:57,945 --> 00:29:00,250 UDJENZA: parenteżi u float. 607 00:29:00,250 --> 00:29:00,620 DAN BRADLEY: Tajba. 608 00:29:00,620 --> 00:29:01,875 Għaliex nixtieq li jkollhom fil float? 609 00:29:01,875 --> 00:29:03,125 UDJENZA: [inaudible]. 610 00:29:05,640 --> 00:29:07,960 DAN BRADLEY: Tajba, tajba. 611 00:29:07,960 --> 00:29:09,210 Float. 612 00:29:11,236 --> 00:29:12,486 UDJENZA: Numeratur. 613 00:29:14,640 --> 00:29:15,610 DAN BRADLEY: Numeratur? 614 00:29:15,610 --> 00:29:18,596 Okay, so I do numeratur float. 615 00:29:18,596 --> 00:29:20,524 UDJENZA: Maqsuma mill - 616 00:29:20,524 --> 00:29:22,142 DAN BRADLEY: Maqsuma minn? 617 00:29:22,142 --> 00:29:23,480 UDJENZA: Denominatur. 618 00:29:23,480 --> 00:29:26,290 DAN BRADLEY: Do I do biss denominatur, jew nagħmel float 619 00:29:26,290 --> 00:29:26,900 denominatur? 620 00:29:26,900 --> 00:29:29,410 UDJENZA: Just denominatur. 621 00:29:29,410 --> 00:29:30,335 DAN BRADLEY: Okay. 622 00:29:30,335 --> 00:29:35,285 UDJENZA: U inti tista timmultiplika din b'100. 623 00:29:35,285 --> 00:29:39,130 DAN BRADLEY: U jien timmultiplika din b'100. 624 00:29:39,130 --> 00:29:40,560 UDJENZA: U allura parentesi madwar id-espressjoni kollu. 625 00:29:40,560 --> 00:29:41,810 DAN BRADLEY: Yep. 626 00:29:47,110 --> 00:29:48,360 >> Okay. 627 00:29:50,575 --> 00:29:52,860 Ħares tajjeb? 628 00:29:52,860 --> 00:29:54,110 Ejja nippruvaw dan. 629 00:29:58,170 --> 00:30:00,800 -50. 630 00:30:00,800 --> 00:30:03,590 Tajba, 50. 631 00:30:03,590 --> 00:30:08,010 0, u 100, 50%. 632 00:30:08,010 --> 00:30:10,500 Hija ħadmet bħad ridna. 633 00:30:10,500 --> 00:30:13,510 Ma dan il-kodiċi jagħmel sens li n-nies? 634 00:30:13,510 --> 00:30:17,600 Jien ser jiffrankaw sabiex inti tista 'tikseb kopja ta' dan. 635 00:30:17,600 --> 00:30:18,684 Yeah? 636 00:30:18,684 --> 00:30:20,055 UDJENZA: Għaliex ma inti bżonn biex [inaudible]? 637 00:30:22,800 --> 00:30:24,603 DAN BRADLEY: Fejn? 638 00:30:24,603 --> 00:30:26,076 UDJENZA: Bħal, meta inti tgħidli denominatur huwa daqs 639 00:30:26,076 --> 00:30:28,040 [Inaudible]. 640 00:30:28,040 --> 00:30:30,630 DAN BRADLEY: Meta għandi hawnhekk? 641 00:30:30,630 --> 00:30:32,510 Għaliex kieku għandi int quddiemu? 642 00:30:32,510 --> 00:30:37,120 UDJENZA: Minħabba l-oħra għandha int quddiemha. 643 00:30:37,120 --> 00:30:40,060 DAN BRADLEY: Well, b'tali mod li ma kinitx linja, id-dritt? 644 00:30:40,060 --> 00:30:45,960 So I jiddikjara dan denominatur int fuq il-linja, 645 00:30:45,960 --> 00:30:48,880 u jien ma jkollhom fil-linja għax inkun 646 00:30:48,880 --> 00:30:52,680 tiddikjarah mazz ta 'drabi, u ma jkunx effettivament iwettqu 647 00:30:52,680 --> 00:30:54,280 fuq li imkien ieħor fil-programm. 648 00:30:54,280 --> 00:30:56,520 LEXI ROSS: Yeah, il-ħaġa importanti li wieħed jiftakar huwa li 649 00:30:56,520 --> 00:30:58,530 varjabbli biss jeħtieġ li jiġu ddikjarati darba. 650 00:30:58,530 --> 00:31:00,570 Allura immaġina huwa simili introduzzjoni ta 'varjabbli ġodda 651 00:31:00,570 --> 00:31:04,640 fid-dinja billi ċċempel dan int jew float jew whatnot, u 652 00:31:04,640 --> 00:31:07,170 ladarba huwa ddikjarat, kull ma għandek bżonn tagħmel biex jibdlu huwa 653 00:31:07,170 --> 00:31:10,510 biss sejħa lilha mill-isem tiegħu: denominatur, jew x, y jew. 654 00:31:10,510 --> 00:31:13,347 Ghandek bzonn biss li fil-fatt hija sejħa ta 'int biss darba. 655 00:31:13,347 --> 00:31:14,325 >> DAN BRADLEY: Yeah. 656 00:31:14,325 --> 00:31:16,770 UDJENZA: Tista 'tispjega d-differenza bejn% d 657 00:31:16,770 --> 00:31:21,180 u f% u jekk inti qatt tiddikjara 658 00:31:21,180 --> 00:31:22,790 varjabbli bħala deċimali? 659 00:31:22,790 --> 00:31:25,850 DAN BRADLEY: Allura% duf% fil hawn? 660 00:31:28,950 --> 00:31:32,190 LEXI ROSS: Allura d fil-fatt tirreferi biss għal ċifri, mhux 661 00:31:32,190 --> 00:31:33,630 deċimali, li huwa tip ta 'konfużjoni. 662 00:31:33,630 --> 00:31:36,310 M'hemm l-ebda tip ta 'data attwali msejjaħ deċimali, u meta inti 663 00:31:36,310 --> 00:31:39,750 tixtieq li jistampa l-int, inti jirreferu għaliha bħala d%, jew 664 00:31:39,750 --> 00:31:44,440 %-X'ikun-d. F huwa għal float, li youd think 665 00:31:44,440 --> 00:31:49,070 ikun i, iżda huwa attwalment d għat int. 666 00:31:49,070 --> 00:31:49,420 >> DAN BRADLEY: Yep? 667 00:31:49,420 --> 00:31:52,180 UDJENZA: Allura fil-programm l-oħra, għaliex ma aħna biss tagħmel 668 00:31:52,180 --> 00:31:57,764 l-istess ħaġa meta inti qed tgħid Fahrenheit? 669 00:31:57,764 --> 00:32:00,760 Għaliex ma npoġġux, bħall -? 670 00:32:00,760 --> 00:32:02,465 DAN BRADLEY: Fil-qiegħ hawn? 671 00:32:02,465 --> 00:32:03,810 Jista 'jkollok. 672 00:32:03,810 --> 00:32:05,900 Kien ikun kompletament leġittimu. 673 00:32:05,900 --> 00:32:08,290 I simili tagħmel dan il-mod, in-nies oħra bħal separazzjoni 674 00:32:08,290 --> 00:32:10,450 it out fil-linji differenti ta 'kodiċi. 675 00:32:10,450 --> 00:32:12,290 Jew mod kif jaħdem multa. 676 00:32:12,290 --> 00:32:12,760 X'hemm up? 677 00:32:12,760 --> 00:32:13,700 >> UDJENZA: Tista 'tispjega dak il-%% 678 00:32:13,700 --> 00:32:14,170 [Inaudible]? 679 00:32:14,170 --> 00:32:15,520 DAN BRADLEY: Okay, sabiex il-mija, mija. 680 00:32:15,520 --> 00:32:18,520 Dritt, I kienet se jmorru fuq dan. 681 00:32:18,520 --> 00:32:21,970 L-mija ewwel huwa msejjaħ karattru jaħarbu, u hija biss 682 00:32:21,970 --> 00:32:28,730 jgħid il-ħaġa wara dan mhuwiex fil-fatt il-kodiċi. 683 00:32:28,730 --> 00:32:36,230 Allura dan l-ewwel fil-mija, id-dritt, il-% 0.02 f, dawk kollha% .02 f 684 00:32:36,230 --> 00:32:40,860 tfisser xi ħaġa li printf bħala funzjoni. 685 00:32:40,860 --> 00:32:44,520 %%, I biss ridt li attwalment biss stampar ta ' 686 00:32:44,520 --> 00:32:45,670 mija sinjal. 687 00:32:45,670 --> 00:32:47,960 So Jien ma tgħid hemm xi ħaġa importanti warajh. 688 00:32:47,960 --> 00:32:49,820 Jien biss qal hemm sinjal mija warajh. 689 00:32:49,820 --> 00:32:52,345 Jekk jogħġbok jistampa sinjal fil-mija. 690 00:32:52,345 --> 00:32:54,010 Allura fil-mija, imbagħad ieħor fil-mija. 691 00:32:54,010 --> 00:32:56,415 UDJENZA: Tista turi dak li look like jekk għandek 692 00:32:56,415 --> 00:32:57,858 float bbażata fuq linja oħra? 693 00:32:57,858 --> 00:33:01,490 DAN BRADLEY: Oh yeah, żgur. 694 00:33:01,490 --> 00:33:05,730 Allura jien qed jintalbu biex juru dak li look like jekk I 695 00:33:05,730 --> 00:33:10,500 kellha din numeratur float, dan kollu matematika, fuq linja oħra. 696 00:33:10,500 --> 00:33:16,200 Allura float fil-mija = - 697 00:33:20,630 --> 00:33:25,970 u nixtieq jeħles dan u biss jitqiegħed fil-mija. 698 00:33:25,970 --> 00:33:29,400 U li qed jagħmel l-istess ħaġa eżatt, I biss 699 00:33:29,400 --> 00:33:30,763 jkollhom ieħor varjabbli. 700 00:33:30,763 --> 00:33:33,030 >> UDJENZA: [inaudible]. 701 00:33:33,030 --> 00:33:34,130 DAN BRADLEY: Skrollja 'l isfel għal liema? 702 00:33:34,130 --> 00:33:35,512 UDJENZA: Allura li nista 'nara [inaudible]. 703 00:33:40,380 --> 00:33:42,016 DAN BRADLEY: Liema ma tistax tara? 704 00:33:42,016 --> 00:33:43,510 UDJENZA: Jiddispjacini, I kien [inaudible]. 705 00:33:47,992 --> 00:33:48,490 DAN BRADLEY: Yeah. 706 00:33:48,490 --> 00:33:50,980 UDJENZA: Allura jekk aħna qed tieħu post il-karattru jaħarbu, 707 00:33:50,980 --> 00:33:54,466 jissoponi ridna li jkollhom sinjal dollaru minflok, biss għall- 708 00:33:54,466 --> 00:33:57,780 eżempju, sinjal dollaru lura fil-mija? 709 00:33:57,780 --> 00:33:58,510 DAN BRADLEY: Nope. 710 00:33:58,510 --> 00:34:01,400 Huwa biss dollaru, biss sinjal dollaru wieħed, għaliex dollaru 711 00:34:01,400 --> 00:34:03,740 sinjal ma jfissirx xejn printf. 712 00:34:03,740 --> 00:34:07,980 Il-kwistjoni kienet, għandi bżonn li jkollhom karattru jaħarbu għal 713 00:34:07,980 --> 00:34:10,135 simboli bħal sinjali dollaru? 714 00:34:10,135 --> 00:34:13,330 UDJENZA: tip Għalhekk tas relatat, hemm xi każijiet oħra li 715 00:34:13,330 --> 00:34:15,466 għandna nafu minn meta xi ħaġa bħall-mija 716 00:34:15,466 --> 00:34:18,820 sinjal jista 'jfisser xi ħaġa [inaudible]? 717 00:34:18,820 --> 00:34:20,330 LEXI ROSS: Iva. 718 00:34:20,330 --> 00:34:24,469 Mhux neċessarjament is-sinjal fil-mija, iżda l-backslash, ara 719 00:34:24,469 --> 00:34:26,370 kif għandna aħħar backlash hawn? 720 00:34:26,370 --> 00:34:29,800 Ejja ngħidu aħna fil-fatt riedu jistampaw backlash, għandna d jkollhom 721 00:34:29,800 --> 00:34:31,070 jaħarbu li - 722 00:34:31,070 --> 00:34:32,670 u dan se ħoss konfużjoni - 723 00:34:32,670 --> 00:34:34,260 ma 'backslash. 724 00:34:34,260 --> 00:34:36,370 Allura jekk ridna li jistampaw \ \, nixtiequ 725 00:34:36,370 --> 00:34:40,730 sempliċiment għandek tip li, jew għar addizzjonali 726 00:34:40,730 --> 00:34:42,247 backslash, ieħor ħarba. 727 00:34:48,340 --> 00:34:50,774 U ieħor, jekk irridu li jistampa kwotazzjoni - sabiex 728 00:34:50,774 --> 00:34:53,040 bażikament, xi ħaġa li tindika it-tip ta xi ħaġa speċjali 729 00:34:53,040 --> 00:34:55,800 fi string, irridu li jaħarbu. 730 00:34:55,800 --> 00:34:58,700 Mela ejja ngħidu aħna fil-fatt tixtieq li jkollok kwotazzjoni hawn, nixtiequ 731 00:34:58,700 --> 00:34:59,840 trid tagħmel \ ". 732 00:34:59,840 --> 00:35:02,450 UDJENZA: Allura huwa ġeneralment backslash? 733 00:35:02,450 --> 00:35:03,490 DAN BRADLEY: Huwa ġeneralment backslash. 734 00:35:03,490 --> 00:35:03,740 LEXI ROSS: Yeah. 735 00:35:03,740 --> 00:35:06,962 Għal xi raġuni fil hawn, huwa sinjal fil-mija. 736 00:35:06,962 --> 00:35:08,212 >> UDJENZA: [inaudible]? 737 00:35:11,680 --> 00:35:13,400 DAN BRADLEY: Dan Guy? 738 00:35:13,400 --> 00:35:17,570 Dan huwa biss li jgħidu, il-ħaġa li qed tiġi diviża s hawnhekk huwa 739 00:35:17,570 --> 00:35:20,170 ser tkun ittrattata bħala float għall-fini tad-diviżjoni. 740 00:35:25,110 --> 00:35:30,370 Allura fil-każ ta '50 diviż b'100, jekk I ma kellhomx l- 741 00:35:30,370 --> 00:35:33,260 float hemm, ikun biss ikunu 0. 742 00:35:33,260 --> 00:35:35,930 Li kollox li toħroġ, peress li 50 diviż 743 00:35:35,930 --> 00:35:40,510 100, jekk m'intix inklużi kwalunkwe deċimali, hija 0. - 744 00:35:40,510 --> 00:35:43,520 u kollox wara l-punt deċimali hija biss maqtugħ off. 745 00:35:43,520 --> 00:35:44,891 UDJENZA: Um, 746 00:35:44,891 --> 00:35:48,550 għaliex ma we poġġih qabel denominatur kif ukoll? 747 00:35:48,550 --> 00:35:51,310 DAN BRADLEY: Allura r-raġuni aħna ma tqiegħed fil quddiem ta ' 748 00:35:51,310 --> 00:35:56,010 denominatur huwa għaliex meta inti qed tiġi diviża xi ħaġa mill 749 00:35:56,010 --> 00:35:59,320 integer, hija taħdem biss multa. 750 00:35:59,320 --> 00:36:00,630 Wara numru akbar fuq il-qiegħ 751 00:36:00,630 --> 00:36:02,790 ma tbiddel xejn. 752 00:36:02,790 --> 00:36:06,120 Tista 'iddividi interi biss multa. 753 00:36:06,120 --> 00:36:07,250 Hija biss ma verament kwistjoni. 754 00:36:07,250 --> 00:36:09,053 Inti tista ', ma jkunx tbiddel xejn. 755 00:36:09,053 --> 00:36:11,368 UDJENZA: Mela jekk inti riedu tliet postijiet deċimali, kieku 756 00:36:11,368 --> 00:36:13,220 inti tpoġġi fil-mija 0.03? 757 00:36:13,220 --> 00:36:14,100 DAN BRADLEY: Yep. 758 00:36:14,100 --> 00:36:17,440 Inti tpoġġi% .03 jekk int riedu 759 00:36:17,440 --> 00:36:20,207 tliet postijiet deċimali. 760 00:36:20,207 --> 00:36:23,793 >> Udjenza: U do jikkmanda, x'inhu l-differenza bejn 761 00:36:23,793 --> 00:36:26,330 li u biss tagħmel filwaqt li fil-quċċata? 762 00:36:26,330 --> 00:36:30,540 DAN BRADLEY: Allura do-waqt versus loop filwaqt huma tnejn 763 00:36:30,540 --> 00:36:32,950 jikkmanda pjuttost simili. 764 00:36:32,950 --> 00:36:36,810 L-unika differenza hija li inti tmexxi l-kodiċi darba, inti tmexxi l- 765 00:36:36,810 --> 00:36:40,510 kodiċi ġewwa l-linja ta 'darba qabel 766 00:36:40,510 --> 00:36:42,940 tagħmel kull kontroll attwali. 767 00:36:42,940 --> 00:36:46,970 Allura huwa wkoll ir-raġuni nista 'ngħid denominatur mingħajr ma jagħti 768 00:36:46,970 --> 00:36:48,970 dan numru. 769 00:36:48,970 --> 00:36:52,180 Mela jekk jien qal denominatur int, u mbagħad filwaqt li (denominatur <= 770 00:36:52,180 --> 00:36:55,020 0), hija qatt ma jista 'anke 771 00:36:55,020 --> 00:36:56,890 imexxu l-ġewwa kodiċi. 772 00:36:56,890 --> 00:36:59,350 Hija ser tagħmel dak il-kontroll qabel - 773 00:36:59,350 --> 00:37:00,600 hekk hawn. 774 00:37:14,590 --> 00:37:19,020 Mela jekk jien kellha din loop filwaqt hawnhekk, I għandhom ikollhom 775 00:37:19,020 --> 00:37:25,280 denominatur ugwali, jiġifieri, -2 jew xi numru inqas 776 00:37:25,280 --> 00:37:28,150 minn jew ugwali għal 0 hekk ikun fil-fatt jipprovaw li jmexxu l-kodiċi 777 00:37:28,150 --> 00:37:30,130 ġewwa l-ewwel. 778 00:37:30,130 --> 00:37:33,190 Allura ġeneralment, inti tixtieq li tuża loop do-waqt li 779 00:37:33,190 --> 00:37:37,750 minflok linja waqt meta int titlob għall-input utent 780 00:37:37,750 --> 00:37:41,820 minħabba li jmexxu l-kodiċi darba, titlob għal xi ħaġa l-utent 781 00:37:41,820 --> 00:37:46,920 se jagħtik huwa ġeneralment aħjar soluzzjoni tiegħek, għall-kuntrarju 782 00:37:46,920 --> 00:37:50,250 għal ftit fidu x'ikun inti tpoġġi fil biex jibdew bihom. 783 00:37:50,250 --> 00:37:53,290 UDJENZA: U tagħmel huwa dejjem segwita mill-waqt. 784 00:37:53,290 --> 00:37:56,550 DAN BRADLEY: Do huwa segwit minn xi blokki ta 'kodiċi li inti 785 00:37:56,550 --> 00:38:01,470 jridu biex tesegwixxi, u mbagħad filwaqt li xi kondizzjoni huwa. 786 00:38:01,470 --> 00:38:03,820 LEXI ROSS: Jaħsbu li bħal kmand wieħed tip ta 'maqsuma 787 00:38:03,820 --> 00:38:04,390 f'żewġ partijiet. 788 00:38:04,390 --> 00:38:06,836 Huwa do-waqt, mhux bħal Heres tagħmel, u allura jien 789 00:38:06,836 --> 00:38:10,655 se żżid xi ftit, huwa biss do-waqt. 790 00:38:10,655 --> 00:38:13,322 >> UDJENZA: Nifhem r-raġuni għaliex inti qed tuża l- 791 00:38:13,322 --> 00:38:15,990 sinjali mija tnejn, iżda inti tista 'tispjega li lili għaliex irridu 792 00:38:15,990 --> 00:38:19,390 għandhom il-[inaudible]? 793 00:38:19,390 --> 00:38:22,690 DAN BRADLEY: Okay, hekk is-sinjal perċentwali wieħed huwa biss qal 794 00:38:22,690 --> 00:38:26,150 printf, hawnhekk huwa kmand li Nixtieq li 795 00:38:26,150 --> 00:38:28,380 imla ma 'xi numru. 796 00:38:28,380 --> 00:38:31,750 Allura nixtieq li timla bl b'żewġ punti deċimali u ta ' 797 00:38:31,750 --> 00:38:35,080 float, u għandek issib l-float fl-aħħar ta 'l- 798 00:38:35,080 --> 00:38:37,548 kmand, huwa dan mija. 799 00:38:37,548 --> 00:38:39,407 Does li jagħmel sens? 800 00:38:39,407 --> 00:38:39,894 UDJENZA: Yep. 801 00:38:39,894 --> 00:38:41,355 DAN BRADLEY: Okay. 802 00:38:41,355 --> 00:38:44,764 >> UDJENZA: Hemm xi ħaġa dwar il-linja do-waqt li 803 00:38:44,764 --> 00:38:49,390 jekk il-kondizzjoni ma tiġix sodisfatta, jekk ikollok 804 00:38:49,390 --> 00:38:52,324 numru negattiv għall-numeratur tiegħek, inneħħu biss iżommu 805 00:38:52,324 --> 00:38:57,200 tistaqsi u se żżomm tistaqsi lill-utent? 806 00:38:57,200 --> 00:38:57,400 DAN BRADLEY: Yeah. 807 00:38:57,400 --> 00:39:02,230 Allura jekk il-kundizzjoni ta 'waqt ma tiġix sodisfatta fl-aħħar ta' 808 00:39:02,230 --> 00:39:04,200 il do-waqt, dan ser run lura għall-bidu. 809 00:39:04,200 --> 00:39:05,860 Huwa biss ħolqa. 810 00:39:05,860 --> 00:39:08,000 Allura huwa simili loop filwaqt li l-kundizzjoni ma ġietx 811 00:39:08,000 --> 00:39:09,250 sodisfatti fuq. 812 00:39:10,930 --> 00:39:13,740 Hija biss tmur waħda aktar ħin. 813 00:39:13,740 --> 00:39:14,558 Yeah. 814 00:39:14,558 --> 00:39:18,302 UDJENZA: Mela jekk inti qed tagħmel dan, inti tista, għal waqt tiegħek, 815 00:39:18,302 --> 00:39:22,430 tpoġġi żewġ kundizzjonijiet fil-? 816 00:39:22,430 --> 00:39:24,452 DAN BRADLEY: Tista '. 817 00:39:24,452 --> 00:39:26,350 Hija tiddependi dak li qed titlob. 818 00:39:26,350 --> 00:39:35,150 Allura inti tista 'tpoġġi ż-żewġ kundizzjonijiet fil-linja waqt li jekk ikollok 819 00:39:35,150 --> 00:39:39,470 kollha fi ħdan xi tip ta 'operatur Boolean, li ħsejjes 820 00:39:39,470 --> 00:39:44,740 ikrah, imma hija bażikament din denominatur huwa inqas jew 821 00:39:44,740 --> 00:39:48,730 żero, jew prospetti vera jew falza, id-dritt? 822 00:39:48,730 --> 00:39:51,760 Huwa la inqas minn jew ugwali għal żero jew le. 823 00:39:51,760 --> 00:39:55,640 Allura inti tista 'tagħmel l-operaturi Boolean oħra li ser jgħidu filwaqt 824 00:39:55,640 --> 00:39:59,020 dan huwa wkoll veru jew waqt dan huwa wkoll falza. 825 00:39:59,020 --> 00:40:04,630 Allura huwa affarijiet simili u n-numeratur huwa akbar minn 826 00:40:04,630 --> 00:40:05,770 żero, id-dritt? 827 00:40:05,770 --> 00:40:10,130 Li tistaqsi, dan ser biss loop filwaqt denominatur huwa inqas 828 00:40:10,130 --> 00:40:12,496 minn żero u inti għandek numeratur pożittiv. 829 00:40:12,496 --> 00:40:13,700 UDJENZA: U inti tagħmel l-ANDS 2, id-dritt? 830 00:40:13,700 --> 00:40:14,545 DAN BRADLEY: Żewġ riservi. 831 00:40:14,545 --> 00:40:17,120 LEXI ROSS: Aħna ser tkopri dak aktar tard. 832 00:40:17,120 --> 00:40:20,620 >> UDJENZA: X'jiġri jekk xi ħadd ma jitqiegħdu fil-pożittiv 833 00:40:20,620 --> 00:40:22,018 denominatur? 834 00:40:22,018 --> 00:40:26,410 Jekk dawn jitqiegħdu fil-numeratur negattiv, tista 'twassalhom 835 00:40:26,410 --> 00:40:27,540 għal, per eżempju, titpoġġa fi numeratur mhux negattiva u għandhom 836 00:40:27,540 --> 00:40:30,460 kmand għal dak? 837 00:40:30,460 --> 00:40:30,980 DAN BRADLEY: Inti tista '. 838 00:40:30,980 --> 00:40:32,066 UDJENZA: Dritt issa hija biss jgħid mhux negattiv numeratur. 839 00:40:32,066 --> 00:40:33,690 Liema għandu jkun użat għal dan? 840 00:40:33,690 --> 00:40:38,230 DAN BRADLEY: Allura youd jkollhom jekk il-kundizzjoni, hekk bħal jekk 841 00:40:38,230 --> 00:40:42,282 numeratur huwa inqas minn żero. 842 00:40:42,282 --> 00:40:43,960 LEXI ROSS: Youd probabilment biss tixtieq li farrku fis-aktar 843 00:40:43,960 --> 00:40:44,810 passi, id-dritt? 844 00:40:44,810 --> 00:40:49,660 Allura l-ewwel darba li jitqiegħdu fil-input, aħna'd biss jgħidu jagħtu 845 00:40:49,660 --> 00:40:50,880 us numeratur jew whatnot. 846 00:40:50,880 --> 00:40:53,430 U mbagħad jekk tagħmel il-ħaġa ħażina, dan jista 'jkun il-każ 847 00:40:53,430 --> 00:40:55,570 għal loop waqt, minflok do-waqt, għaliex għandna 848 00:40:55,570 --> 00:41:01,460 l-ewwel darba aħna għandna l-GetInt, u mbagħad waqt li l-kontribut 849 00:41:01,460 --> 00:41:04,040 huwa ħażin, inżommu talbithom għal input ulterjuri bil- 850 00:41:04,040 --> 00:41:10,560 tip differenti ta 'test, bħal dik ma ħadmux jew agħtina 851 00:41:10,560 --> 00:41:12,760 mhux negattiva numeratur minflok, dan it-tip ta 'ħaġa. 852 00:41:17,670 --> 00:41:19,143 >> DAN BRADLEY: Yeah? 853 00:41:19,143 --> 00:41:22,089 UDJENZA: Kif inti ċar l-għalf li [inaudible] 854 00:41:22,089 --> 00:41:23,562 -terminal? 855 00:41:23,562 --> 00:41:25,526 LEXI ROSS:. Clear 856 00:41:25,526 --> 00:41:27,140 DAN BRADLEY: Yeah, inti ma tista 'tip fih. 857 00:41:27,140 --> 00:41:28,710 LEXI ROSS: Attwalment, din mhix terminal reali. 858 00:41:28,710 --> 00:41:31,170 Il-kwistjoni kienet kif taħseb ċara li Jittieħed stabbiliti hemmhekk? 859 00:41:31,170 --> 00:41:33,200 It-tweġiba hija mhuwiex terminal reali, imma ejja ngħidu li inti 860 00:41:33,200 --> 00:41:34,450 huma fil-terminal reali. 861 00:41:42,420 --> 00:41:45,200 Ċara. 862 00:41:45,200 --> 00:41:46,450 Oh, huwa qattus. 863 00:41:53,940 --> 00:41:55,190 DAN BRADLEY: [inaudible]? 864 00:41:59,500 --> 00:42:01,120 Huwa dak l-waħda, id-dritt? 865 00:42:01,120 --> 00:42:01,790 LEXI ROSS: Le, li kollha Jittieħed tiegħi. 866 00:42:01,790 --> 00:42:03,040 DAN BRADLEY: [inaudible]. 867 00:42:05,300 --> 00:42:07,912 LEXI ROSS: Hemm immorru. 868 00:42:07,912 --> 00:42:08,340 DAN BRADLEY: Yeah? 869 00:42:08,340 --> 00:42:10,030 >> UDJENZA: Jaħdem ċar jekk ikollok - 870 00:42:10,030 --> 00:42:12,787 simili, jiġifieri inti tmexxi programm [inaudible] u huwa tistaqsi 871 00:42:12,787 --> 00:42:15,315 inti għal xi ħaġa, u inti ma tridx. 872 00:42:15,315 --> 00:42:16,080 Kif taħseb - 873 00:42:16,080 --> 00:42:17,200 DAN BRADLEY: Kontroll + C? 874 00:42:17,200 --> 00:42:17,780 LEXI ROSS: Yeah. 875 00:42:17,780 --> 00:42:20,640 Mela jekk int tmexxi programm u xi ħaġa mhix se l- 876 00:42:20,640 --> 00:42:22,410 mod inti tixtieq li u inti biss trid ħruġ l-sħiħ 877 00:42:22,410 --> 00:42:25,560 programm, Kontroll + C. Anke jekk int fuq Mac, mhux Apple + C, 878 00:42:25,560 --> 00:42:34,341 Kontroll + C. 879 00:42:34,341 --> 00:42:35,523 UDJENZA: Kellek il-verżjoni korretta fil- 880 00:42:35,523 --> 00:42:36,820 reviżjoni fil-profil tiegħek? 881 00:42:36,820 --> 00:42:39,780 DAN BRADLEY: Naħseb huwa salvati, hux? 882 00:42:39,780 --> 00:42:40,350 Yeah. 883 00:42:40,350 --> 00:42:41,040 LEXI ROSS: Dan huwa l-ispazju. 884 00:42:41,040 --> 00:42:42,290 Yeah. 885 00:42:49,685 --> 00:42:57,496 Naħseb li huwa Reviżjoni 11. 886 00:42:57,496 --> 00:42:59,468 >> DAN BRADLEY: Yeah? 887 00:42:59,468 --> 00:43:02,426 UDJENZA: Does C tagħmel xi suppożizzjonijiet dwar dak li 888 00:43:02,426 --> 00:43:05,877 varjabbli hija jekk inti tiddefinixxi varjabbli iżda ma jassenja 889 00:43:05,877 --> 00:43:07,590 xejn biex immedjatament? 890 00:43:07,590 --> 00:43:11,380 DAN BRADLEY: Allura dan ser taċċetta biss ints f'dak il-post. 891 00:43:11,380 --> 00:43:13,980 Mela jekk inti tiddikjara dan - 892 00:43:13,980 --> 00:43:16,842 UDJENZA: Jekk I biss ma int denominatur virgola, ma 893 00:43:16,842 --> 00:43:18,750 jassumi li huwa ugwali għal żero jew kwalunkwe numru -? 894 00:43:18,750 --> 00:43:20,210 DAN BRADLEY: Nope. 895 00:43:20,210 --> 00:43:25,920 Mela jekk inti ma tassenja, jiġifieri, int denominatur għal xi valur, 896 00:43:25,920 --> 00:43:28,860 jista 'jkun xejn. 897 00:43:28,860 --> 00:43:31,150 Hu l-memorja qodma li kien f'dak il-lok. 898 00:43:31,150 --> 00:43:34,050 Għalhekk jista 'jkun negattiv 2 biljun, jista' jkun pożittiv 899 00:43:34,050 --> 00:43:38,030 2 biljuni, u jista 'jkun kullimkien fl bejn. 900 00:43:38,030 --> 00:43:44,170 Mela jekk inti qed attwalment taħdem l-affarijiet, kun żgur li inti 901 00:43:44,170 --> 00:43:46,080 assenjat valur lill-varjabbli. 902 00:43:46,080 --> 00:43:49,050 Dan, ma jimpurtax għaliex aħna qed immedjatament 903 00:43:49,050 --> 00:43:52,580 assenjazzjoni tal-valur, iżda ġeneralment, yeah. 904 00:44:01,660 --> 00:44:04,640 Kwalunkwe mistoqsijiet oħra? 905 00:44:04,640 --> 00:44:06,300 >> LEXI ROSS: Nistgħu wkoll biss jieħdu mistoqsijiet ġenerali f'dan 906 00:44:06,300 --> 00:44:10,600 punt fuq materjal lecture, materjal sett p, xejn inti stajt 907 00:44:10,600 --> 00:44:15,363 ġew jistaqsi dwar, dan huwa żmien tajjeb biex jistaqsu dawk. 908 00:44:15,363 --> 00:44:16,325 UDJENZA: Allura fil-walkthroughs, Zamyla 909 00:44:16,325 --> 00:44:17,768 semma l-funzjoni round. 910 00:44:17,768 --> 00:44:21,540 Would you f'moħħu jelabora dwar kif għandhom jimplimentaw dik? 911 00:44:21,540 --> 00:44:22,940 LEXI ROSS: Sure, kif għandhom jimplimentaw dik? 912 00:44:22,940 --> 00:44:25,700 UDJENZA: Hija qalet li kien tond. 913 00:44:25,700 --> 00:44:26,580 LEXI ROSS: Oh yeah. 914 00:44:26,580 --> 00:44:29,880 Hekk biss hekk aħna kollha għandhom l-istess vocab u l-għalf, 915 00:44:29,880 --> 00:44:33,070 jimplimentaw ġeneralment tfisser fatt bil-miktub mill-bidu. 916 00:44:33,070 --> 00:44:35,530 U hekk ma naħsibx hi kien jitkellem dwar it-tip ta 'kitba 917 00:44:35,530 --> 00:44:36,010 -rawnd funzjoni. 918 00:44:36,010 --> 00:44:37,820 Hija probabbilment biss maħsub kif jużah. 919 00:44:37,820 --> 00:44:41,900 Timplimenta mezzi tip simili joħolqu. 920 00:44:41,900 --> 00:44:48,670 Allura ġenerali, żmien meta rridu tuża l-funzjoni round hija I 921 00:44:48,670 --> 00:44:49,170 tfisser, sort ta ', per eżempju, 922 00:44:49,170 --> 00:44:50,260 jekk inti tixtieq li jarrotondaw. 923 00:44:50,260 --> 00:44:53,140 Tista 'tagħti me kuntest ftit aktar dwar dak li l- 924 00:44:53,140 --> 00:44:53,907 problema kienet? 925 00:44:53,907 --> 00:44:56,192 UDJENZA: Biex tevita l-imprecisions tal deċimali 926 00:44:56,192 --> 00:44:58,480 billi tagħmilhom float. 927 00:44:58,480 --> 00:44:59,020 LEXI ROSS: Yeah. 928 00:44:59,020 --> 00:45:02,770 Allura l-kwistjoni ma 'sufruni li konna tip ta' allużjoni għall hija 929 00:45:02,770 --> 00:45:04,820 li minħabba l-mod li qed maħżuna fil-magna, 930 00:45:04,820 --> 00:45:08,700 dawn mhux qed 100% preċiża fil-mod li inti tista 'taħseb 931 00:45:08,700 --> 00:45:10,060 calculator tiegħek se jaħżinhom. 932 00:45:13,560 --> 00:45:16,560 Huwa diffiċli għalija li juru eżempju mingħajr ma jkunu jafu dak li 933 00:45:16,560 --> 00:45:17,750 il-kuntest kien minn. 934 00:45:17,750 --> 00:45:18,920 I do not know, inti tista 'taħseb xi ħaġa, Dan? 935 00:45:18,920 --> 00:45:23,120 >> DAN BRADLEY: Mela jekk inti qed tistaqsi għal, ngħidu aħna, in-numri 936 00:45:23,120 --> 00:45:26,590 aktar minn 10 u inti qed tuża sufruni, u int żżid 1 937 00:45:26,590 --> 00:45:30,810 għal float kull darba, se kultant stenna sakemm inti ħadthom 938 00:45:30,810 --> 00:45:34,470 gotten sa 12 qabel ma din ser jgħidu li dan huwa fil-fatt numru 939 00:45:34,470 --> 00:45:36,520 akbar minn 10. 940 00:45:36,520 --> 00:45:42,530 Sufruni għandhom xi kwistjonijiet serji biss bejn il-32 941 00:45:42,530 --> 00:45:49,970 u ċifra deċimali 33 li ser imorru, u għalhekk jista 9.9999999, jew 942 00:45:49,970 --> 00:45:53,210 jista 'jkun 10.0000001, id-dritt? 943 00:45:53,210 --> 00:45:55,680 Hija ma verament distinzjoni bejn it-tnejn, hekk jekk int 944 00:45:55,680 --> 00:45:59,310 stennija għal affarijiet akbar minn jew ugwali għal 10, inti tista ' 945 00:45:59,310 --> 00:46:03,440 ma naslu s'hemm fuq dak li inti taħseb hija l-iterazzjoni 10. 946 00:46:03,440 --> 00:46:07,760 Inti tista 'tikseb hemm fl-11. 947 00:46:07,760 --> 00:46:08,980 LEXI ROSS: Essenzjalment, yeah. 948 00:46:08,980 --> 00:46:11,490 Meta inti qed looping fuq lott ta 'sufruni, li meta l- 949 00:46:11,490 --> 00:46:13,276 imprecisions jiġri. 950 00:46:13,276 --> 00:46:18,350 UDJENZA: I think, hekk bażikament, huwa simili fuq il-p 951 00:46:18,350 --> 00:46:24,030 stabbiliti, trid inti li jarrotondaw l-valur float, u jekk inti tpoġġi fil 952 00:46:24,030 --> 00:46:29,940 4.24 għall-ammont ta 'bidla li għandek bżonn lura, jekk inti biss tagħmel 953 00:46:29,940 --> 00:46:33,970 ħinijiet 100, dan ser attwalment bidla fil 423 - 954 00:46:33,970 --> 00:46:34,460 DAN BRADLEY: Kultant, yeah. 955 00:46:34,460 --> 00:46:36,974 UDJENZA: Allura naħseb li huwa biss bħal, kif taħseb li tuża l-round 956 00:46:36,974 --> 00:46:39,390 funzjoni fil-kodiċi attwali biex tagħmel dan hekk ma tagħmel dan? 957 00:46:39,390 --> 00:46:44,390 DAN BRADLEY: Mela jekk int arrotondament 424 billi jiġi mmoltiplikat 958 00:46:44,390 --> 00:46:48,320 billi 100 u tagħmlu integer, se kultant 959 00:46:48,320 --> 00:46:52,130 jagħmluha 423 minħabba li impreċiżjoni. 960 00:46:52,130 --> 00:46:58,926 U għalhekk l-affarijiet li tista 'tagħmel huwa biss żid 0.0000003. 961 00:46:58,926 --> 00:47:00,744 UDJENZA: Imma naħseb, fil-fatt, li jridu 962 00:47:00,744 --> 00:47:02,400 li nużaw l-rawnd. 963 00:47:02,400 --> 00:47:03,250 DAN BRADLEY: Il-funzjoni tond? 964 00:47:03,250 --> 00:47:06,310 Hemm probabbilment funzjoni matematika, xi ħaġa fil- 965 00:47:06,310 --> 00:47:06,996 librerija matematika. 966 00:47:06,996 --> 00:47:07,910 UDJENZA: # Jinkludu matematika. 967 00:47:07,910 --> 00:47:10,150 DAN BRADLEY: # Jinkludu , u hemm 968 00:47:10,150 --> 00:47:10,990 probabbilment round funzjoni. 969 00:47:10,990 --> 00:47:12,480 UDJENZA: Eżatt bħal tond () -? 970 00:47:12,480 --> 00:47:13,840 LEXI ROSS: Essenzjalment, għaliex inti tixtieq li jarrotondaw li 971 00:47:13,840 --> 00:47:14,720 l-eqreb ċenteżmu. 972 00:47:14,720 --> 00:47:16,440 DAN BRADLEY: Ejja pull up-paġni bniedem. 973 00:47:16,440 --> 00:47:19,460 Allura għodda handy, jekk ma tafx - 974 00:47:19,460 --> 00:47:21,800 inti pull up-terminal - 975 00:47:21,800 --> 00:47:23,670 huwa jekk inti tmur matematika bniedem. 976 00:47:27,272 --> 00:47:29,030 LEXI ROSS: Kessaħ. 977 00:47:29,030 --> 00:47:34,970 >> Allura tista 'tara, hekk il-bniedem huwa qasir għall manwali, mhux il-bniedem, u 978 00:47:34,970 --> 00:47:37,660 din tippermetti li inti tfittex up aktar informazzjoni dwar kwalunkwe partikolari 979 00:47:37,660 --> 00:47:40,000 funzjoni jew il-librerija li tista 'tkun jittrattaw. 980 00:47:40,000 --> 00:47:44,040 So I biss ittajpjat fil-matematika bniedem. 981 00:47:44,040 --> 00:47:45,290 Let me zoom pulzieri 982 00:47:50,990 --> 00:47:52,610 DAN BRADLEY: Nistgħu nippruvaw tond bniedem, wisq. 983 00:47:52,610 --> 00:47:55,060 LEXI ROSS: Sure. 984 00:47:55,060 --> 00:47:56,870 DAN BRADLEY: U dan se lista out - 985 00:47:56,870 --> 00:48:00,640 matematika bniedem se lista dak kollu li fil-librerija matematika, 986 00:48:00,640 --> 00:48:02,820 li aħna ser jinkludu. 987 00:48:02,820 --> 00:48:04,080 Yeah, irridu wkoll tond. 988 00:48:04,080 --> 00:48:06,690 LEXI ROSS: So I biss għamlet round bniedem. 989 00:48:06,690 --> 00:48:10,460 Tista 'tara hawn fil-sinopsi, li jgħid # Jinkludu 990 00:48:10,460 --> 00:48:16,510 , b'tali mod li tip simili cs50.h, stdio.h. 991 00:48:16,510 --> 00:48:19,020 U jidher qisu huwa attwalment mgħobbija żżejjed, li jfisser 992 00:48:19,020 --> 00:48:22,930 hija tieħu tipi differenti ta 'argumenti, sabiex inti tista' round 993 00:48:22,930 --> 00:48:24,320 jirdoppja jew sufruni. 994 00:48:24,320 --> 00:48:26,740 DAN BRADLEY: Round versus roundf. 995 00:48:26,740 --> 00:48:27,335 LEXI ROSS: Roundf. 996 00:48:27,335 --> 00:48:30,128 Did Zamyla isemmi roundf versus tond? 997 00:48:30,128 --> 00:48:34,120 UDJENZA: Fil-walkthrough, kien biss tond (). 998 00:48:34,120 --> 00:48:36,780 DAN BRADLEY: Okay, hekk hi probabbilment kienet qed tuża l-doppju, 999 00:48:36,780 --> 00:48:39,110 imbagħad, għall-kuntrarju ta 'float. 1000 00:48:39,110 --> 00:48:43,080 Okay, sabiex inti tkun mmolteplika b'100 u mbagħad madwaru, u 1001 00:48:43,080 --> 00:48:47,950 youd tikseb l-għadd eqreb lilu, I think. 1002 00:48:47,950 --> 00:48:50,450 >> LEXI ROSS: Allura l-funzjoni round lura l-integrali 1003 00:48:50,450 --> 00:48:53,760 eqreb tqarrib x fin-nofs każijiet bogħod minn 0 valur, 1004 00:48:53,760 --> 00:48:55,850 irrispettivament mill-direzzjoni arrotondament kurrenti. 1005 00:48:55,850 --> 00:49:00,160 Allura essenzjalment, inti tixtieq li biss madwar darba int fil- 1006 00:49:00,160 --> 00:49:01,830 valur sħiħ, sabiex inti immoltiplika b 1007 00:49:01,830 --> 00:49:03,896 100 u mbagħad tond. 1008 00:49:03,896 --> 00:49:05,787 Does li jagħmel sens aktar? 1009 00:49:05,787 --> 00:49:10,580 UDJENZA: Biex tuża dik il-funzjoni fil-fajl C, ma għandek bżonn biex 1010 00:49:10,580 --> 00:49:15,475 tpoġġi float tondi, bħal jekk varjabbli tiegħek huwa msejjaħ q, inti 1011 00:49:15,475 --> 00:49:21,216 tpoġġi tond (float) q, u mbagħad xi parentesi, jew jista ' 1012 00:49:21,216 --> 00:49:23,770 inti biss jitqiegħed tondi, u mela Q fil-parentesi? 1013 00:49:23,770 --> 00:49:27,180 DAN BRADLEY: Mela jekk inti kienu jippruvaw jużaw din il-funzjoni 1014 00:49:27,180 --> 00:49:33,360 fil-fatt, inti se tieħu din q, huwa q float, 1015 00:49:33,360 --> 00:49:34,995 jew kif huwa ddikjarat? 1016 00:49:34,995 --> 00:49:35,980 UDJENZA: Q hija float. 1017 00:49:35,980 --> 00:49:39,080 DAN BRADLEY: Mela jekk q hija ddikjarata bħala float, inti 1018 00:49:39,080 --> 00:49:42,150 ħu tondi, u mbagħad jagħtuh q. 1019 00:49:42,150 --> 00:49:45,770 Inti jista 'jkollok li tiddikjaraha bħala doppja f'dan il-każ. 1020 00:49:45,770 --> 00:49:47,170 LEXI ROSS: Yeah, jekk inti tixtieq li tuża roundf. 1021 00:49:47,170 --> 00:49:50,620 UDJENZA: I tista 'biss tuża roundf, u mbagħad q fil-kwotazzjonijiet? 1022 00:49:50,620 --> 00:49:53,706 DAN BRADLEY: Le, mhux kwotazzjonijiet, biss q. 1023 00:49:53,706 --> 00:49:55,542 UDJENZA: Jiddispjacini, mhux kwotazzjonijiet, fil-parentesi. 1024 00:49:55,542 --> 00:49:56,792 DAN BRADLEY: Fil-parentesi, yeah. 1025 00:50:00,330 --> 00:50:02,040 LEXI ROSS: Jiddispjacini li kien ftit konfuża. 1026 00:50:02,040 --> 00:50:03,067 Kwalunkwe aktar mistoqsijiet? 1027 00:50:03,067 --> 00:50:04,041 >> DAN BRADLEY: Yeah? 1028 00:50:04,041 --> 00:50:07,450 UDJENZA: rawnds Allura tond biss għall interi? 1029 00:50:07,450 --> 00:50:08,920 LEXI ROSS: Iva. 1030 00:50:08,920 --> 00:50:11,020 DAN BRADLEY: Yeah, rawnds biss tondi għal interi. 1031 00:50:11,020 --> 00:50:13,030 UDJENZA: Mela jekk int riedu li jkollhom xi ħaġa eżatt li 1032 00:50:13,030 --> 00:50:15,146 meħtieġa biex tkun [inaudible] immoltiplikata b'100 u mbagħad 1033 00:50:15,146 --> 00:50:17,536 diviż b'100 darb'oħra jekk int riedu -? 1034 00:50:20,410 --> 00:50:23,497 LEXI ROSS: Mela jekk int riedu li ġġibu f'forma deċimali? 1035 00:50:23,497 --> 00:50:27,224 UDJENZA: Well-eżempju, per eżempju, [inaudible] int 1036 00:50:27,224 --> 00:50:30,732 għandhom 1.25, u mbagħad [inaudible] 1037 00:50:30,732 --> 00:50:36,100 1.24, jekk inti riedu jżommu dik kif 1.25, inti 1038 00:50:36,100 --> 00:50:39,516 immoltiplika li sa 100, madwaru, u mbagħad jaqsamha minn 100 1039 00:50:39,516 --> 00:50:41,480 għal darb'oħra biex tikseb 1.25? 1040 00:50:41,480 --> 00:50:41,860 LEXI ROSS: Yeah. 1041 00:50:41,860 --> 00:50:46,770 Għalhekk il-kwistjoni hija, peress arrotondament, bħala l-paġna bniedem 1042 00:50:46,770 --> 00:50:50,470 jgħid, rawnds fil-valur integrali eqreb, ma jfissirx li 1043 00:50:50,470 --> 00:50:53,420 li wieħed tkunx tixtieq li mmolteplika b'100, jagħmlu l- 1044 00:50:53,420 --> 00:50:56,260 arrotondament, u iddividi 100 għal darb'oħra għal, per eżempju, jiksbu l-korretta 1045 00:50:56,260 --> 00:50:58,750 dollaru u ċenteżmi valur? 1046 00:50:58,750 --> 00:51:02,000 U t-tweġiba hija -? 1047 00:51:02,000 --> 00:51:02,160 DAN BRADLEY: Le 1048 00:51:02,160 --> 00:51:04,840 I mean, jekk int biss jkollna valur float, jekk tibda 1049 00:51:04,840 --> 00:51:08,730 b'valur float ta '1.25, li kif li għaddej biex tkun 1050 00:51:08,730 --> 00:51:10,260 interpretata. 1051 00:51:10,260 --> 00:51:13,790 Mela jekk inti immoltiplika lilha mill 100 u mbagħad jaqsamha minn 100, 1052 00:51:13,790 --> 00:51:17,130 huwa għadu għaddej biex jiġu interpretati bħala 1.25, jew 1053 00:51:17,130 --> 00:51:18,260 possibilment 1.249 ... 1054 00:51:18,260 --> 00:51:19,440 .. 999. 1055 00:51:19,440 --> 00:51:21,630 LEXI ROSS: Naħseb li l-kwistjoni kienet simili, inti 1056 00:51:21,630 --> 00:51:24,850 jimmultiplikaw, allura l-użu tondi, imbagħad, għandu jaqsam, dan huwa simili - 1057 00:51:24,850 --> 00:51:25,290 DAN BRADLEY: Yeah. 1058 00:51:25,290 --> 00:51:27,530 I għadhom ma naħsibx li tbiddel xejn, għalkemm. 1059 00:51:27,530 --> 00:51:28,000 Naħseb li huwa għadu. 1060 00:51:28,000 --> 00:51:30,550 LEXI ROSS: Minħabba round ma - li tuża interi. 1061 00:51:30,550 --> 00:51:34,080 Mela jekk inti tipprova li jarrotondaw 1.25, inti biss tikseb 1. 1062 00:51:34,080 --> 00:51:36,570 So I think sabiex jiksbu bħall-preċiżjoni addizzjonali, 1063 00:51:36,570 --> 00:51:37,720 jekk dan huwa dak li qed jitkellem dwar. 1064 00:51:37,720 --> 00:51:42,260 >> UDJENZA: Allura b'liema każijiet tuza tond, allura? 1065 00:51:42,260 --> 00:51:44,920 DAN BRADLEY: Allura f'dan il-każ, jekk inti tixtieq, jiġifieri, in-numru 1066 00:51:44,920 --> 00:51:51,570 ta 'ċenteżmi minn $ 1.25, youd mmolteplika b'100, tondi, jiksbu 1067 00:51:51,570 --> 00:51:56,980 125, u jitilqu minnu bħala li, ċenteżmu, għall-kuntrarju jippruvaw 1068 00:51:56,980 --> 00:51:58,760 jikkonvertu lura fil dollari u ċenteżmi. 1069 00:51:58,760 --> 00:52:02,092 LEXI ROSS: Oh yeah, yeah, għall-żgur. 1070 00:52:02,092 --> 00:52:04,948 UDJENZA: Għaliex għandek bżonn li jarrotondaw li [inaudible]? 1071 00:52:07,810 --> 00:52:10,740 DAN BRADLEY: Mela jekk inti immoltiplika lilha mill 100 u mbagħad 1072 00:52:10,740 --> 00:52:14,060 immedjatament jaqilbu għall integer, li hija l-aktar 1073 00:52:14,060 --> 00:52:17,950 forma utli, li meta inti jittrattaw ma 'dak 1074 00:52:17,950 --> 00:52:19,470 nuqqas ta 'preċiżjoni, id-dritt? 1075 00:52:19,470 --> 00:52:26,450 Allura jista 'jkun 124.999999, u hekk jekk inti mbagħad jikkonvertu dak l- 1076 00:52:26,450 --> 00:52:29,480 integer, hija biss qtar kollox off thats hawn taħt 1077 00:52:29,480 --> 00:52:29,930 il deċimali. 1078 00:52:29,930 --> 00:52:31,160 UDJENZA: Allura huwa ser jagħtuk [inaudible]. 1079 00:52:31,160 --> 00:52:34,960 DAN BRADLEY: Eżattament, minflok 125, li huwa 1080 00:52:34,960 --> 00:52:37,074 għaliex inti tixtieq li jarrotondaw. 1081 00:52:37,074 --> 00:52:38,850 >> UDJENZA: Jiddispjacini, inti tista 'jirrepeti dak li qal li 1082 00:52:38,850 --> 00:52:40,680 għandhom jagħmlu għall-kuntrarju għal dak li inti m'għandekx tagħmel? 1083 00:52:40,680 --> 00:52:40,910 DAN BRADLEY: Okay. 1084 00:52:40,910 --> 00:52:45,725 Allura dak li għandek tagħmel hija jekk inti tibda bil 1.25, immoltiplika 1085 00:52:45,725 --> 00:52:51,960 lilha mill 100, u mbagħad tondi li numru sħiħ, dak 125 jew 1086 00:52:51,960 --> 00:52:56,420 124.9999, u jiksbu l-eqreb numru sħiħ. 1087 00:52:56,420 --> 00:52:58,420 UDJENZA: Mela jekk inti round, li tqiegħdu 1088 00:52:58,420 --> 00:52:59,920 għall-eqreb numru sħiħ? 1089 00:52:59,920 --> 00:53:01,420 DAN BRADLEY: Yeah. 1090 00:53:01,420 --> 00:53:07,420 UDJENZA: Hemm xi mod biex jillimitaw, jekk inti ssaqsi għal float 1091 00:53:07,420 --> 00:53:10,920 li għandha inputted, hemm mod biex jillimitaw kemm deċimali 1092 00:53:10,920 --> 00:53:13,920 postijiet inti bott input float li? 1093 00:53:13,920 --> 00:53:16,210 LEXI ROSS: Mhux bl-użu tal-implimentazzjoni CS50 s. 1094 00:53:16,210 --> 00:53:22,560 I mean, inti jista 'joqgħod kemm tkun kbira l-input huwa mogħti bi 1095 00:53:22,560 --> 00:53:25,020 l-utent, iżda li tkun teħtieġ l-implimentazzjoni ġdida 1096 00:53:25,020 --> 00:53:29,780 ta GetFloat, u għalhekk inti m'għandekx bżonn ninkwetaw dwar dan. 1097 00:53:29,780 --> 00:53:34,850 DAN BRADLEY: Allura jekk, jgħidu, input 1.256, inti tista 'biss 1098 00:53:34,850 --> 00:53:38,310 użu 1.25, jew inti tista 'tagħmel 1.26. 1099 00:53:38,310 --> 00:53:40,450 Jew il-mod, naħseb li l-implimentazzjoni tgħid li inti tista '- 1100 00:53:40,450 --> 00:53:41,860 UDJENZA: Tista 'biss jitlob li jiġi round li - 1101 00:53:41,860 --> 00:53:46,860 DAN BRADLEY: Tkun xi tkun trid, yeah, sakemm inti tagħmel 1102 00:53:46,860 --> 00:53:48,110 xi tip ta 'arrotondament. 1103 00:53:51,410 --> 00:53:53,950 Xi ħaġa oħra? 1104 00:53:53,950 --> 00:53:55,200 Ma għandhom ikunu dwar arrotondament. 1105 00:54:00,886 --> 00:54:01,374 LEXI ROSS: Yeah? 1106 00:54:01,374 --> 00:54:03,814 >> UDJENZA: Jekk irridu li tikkontrolla biex tara jekk l-istil ta 'tagħna 1107 00:54:03,814 --> 00:54:06,285 code huwa xieraq jew l-istil aħjar 1108 00:54:06,285 --> 00:54:08,585 li jista 'jkun, huwa li l-tip ta' ħaġa aħna'd irabbu fil 1109 00:54:08,585 --> 00:54:11,460 sezzjoni, jew fuq ħinijiet, jew li l-tip ta 'ħaġa 1110 00:54:11,460 --> 00:54:15,582 nistgħu post privatament fuq il-ħaġa, fuq diskussjoni, u mbagħad 1111 00:54:15,582 --> 00:54:17,280 tistaqsi għall-parir fuq? 1112 00:54:17,280 --> 00:54:20,400 LEXI ROSS: Allura aħna ma, fil-ħinijiet uffiċċju jew fuq CS50 1113 00:54:20,400 --> 00:54:23,510 Iddiskuti, aħna mhux se attwalment grad tiegħek p stabbiliti bil-quddiem 1114 00:54:23,510 --> 00:54:26,420 għall-istil, iżda naħseb probabbilment l-aktar utli 1115 00:54:26,420 --> 00:54:29,800 ħaġa inti tista 'tagħmel huwa li tħares lejn eżempji, u int 1116 00:54:29,800 --> 00:54:35,290 għandhom ikunu jistgħu jsibu li fil-kodiċi taqsima, li għandu jkun 1117 00:54:35,290 --> 00:54:39,290 online mqassma, kif ukoll il-pjastri lecture, hemm 1118 00:54:39,290 --> 00:54:40,730 Għandu jkun eżempji ta 'kodiċi. 1119 00:54:40,730 --> 00:54:43,150 Imma jekk għandek xi mistoqsijiet individwali dwar ċertu 1120 00:54:43,150 --> 00:54:46,300 kwistjoni stil, definittivament tħossok liberu li jitlob li fuq CS50 1121 00:54:46,300 --> 00:54:49,320 Iddiskuti, u ħinijiet, jew fil-ħin tiegħek. 1122 00:54:49,320 --> 00:54:52,330 Imma jekk huwa aktar ħarsa ġenerali lejn il-kodiċi tiegħi, huwa aħjar li 1123 00:54:52,330 --> 00:54:55,610 tip ta 'eżempji ta' użu u jippruvaw tajbin kodiċi tiegħek għal dan. 1124 00:54:55,610 --> 00:54:57,560 U nemmen li hemm Gwida tal-Istil fuq - 1125 00:54:57,560 --> 00:54:58,640 DAN BRADLEY: Hemm il-Gwida tal-Istil. 1126 00:54:58,640 --> 00:54:59,830 Il-Gwida tal-Istil tal-biża. 1127 00:54:59,830 --> 00:55:03,670 Hija tgħallem dak kollu li għandek bżonn, u tkopri pretty 1128 00:55:03,670 --> 00:55:07,710 ħafna kull eżempju magħrufa għall-bniedem, jew għall-inqas magħrufa lili. 1129 00:55:10,750 --> 00:55:12,000 >> Xi ħaġa oħra? 1130 00:55:14,830 --> 00:55:15,275 Kull dritt. 1131 00:55:15,275 --> 00:55:15,840 Kessaħ, guys. 1132 00:55:15,840 --> 00:55:16,440 LEXI ROSS: Have jum kbir. 1133 00:55:16,440 --> 00:55:17,690 DAN BRADLEY: Grazzi għall ġejjin.