1 00:00:07,360 --> 00:00:09,360 [Powered by Google Translate] Nate HARDISON: Lè ou te gen pwogram miltip louvri sou yon 2 00:00:09,360 --> 00:00:11,250 òdinatè, li sanble tankou tout bagay nan 3 00:00:11,250 --> 00:00:12,880 kouri nan an menm tan. 4 00:00:12,880 --> 00:00:15,350 Pou egzanp, ou ka ap travay nan yon navigatè entènèt tankou 5 00:00:15,350 --> 00:00:19,360 Firefox oswa Internet Explorer, koute mizik sou itun, 6 00:00:19,360 --> 00:00:21,490 ak ekri yon redaksyon ak Pawòl. 7 00:00:21,490 --> 00:00:24,240 Sepandan, anba kapo machin lan, pwogram yo aktyèlman 8 00:00:24,240 --> 00:00:25,830 kouri yon sèl nan yon moman. 9 00:00:25,830 --> 00:00:29,750 Li nan travay la nan sistèm nan fonksyone, Windows, Mac OSX, oswa 10 00:00:29,750 --> 00:00:33,070 Linux, jere chak nan sa yo pwosesis ki apa a, kòm la 11 00:00:33,070 --> 00:00:35,900 pwogram yo li te ye, ak chanje ant yo yon jan pou lè ou 12 00:00:35,900 --> 00:00:38,610 ale nan tcheke paj Facebook ou a ap travay sou redaksyon ou an 13 00:00:38,610 --> 00:00:41,590 ankò, Pawòl se youn nan ki nan kouri. 14 00:00:41,590 --> 00:00:44,890 >> Pafwa, menm si, nou vle pwogram tèt yo a ap kapab 15 00:00:44,890 --> 00:00:47,440 fè bagay miltip tankou sa a, tou. 16 00:00:47,440 --> 00:00:49,630 Si ou se tankou m ', ou pwobableman genyen yon pakèt moun sou 17 00:00:49,630 --> 00:00:52,730 onglè diferan louvri nan navigatè entènèt ou a, yonn pou email, 18 00:00:52,730 --> 00:00:55,070 yon sèl ak yon kalandriye, ak sou sa. 19 00:00:55,070 --> 00:00:58,270 Nou te ka trete chak tab kòm yon pwogram separe oswa pwosesis, 20 00:00:58,270 --> 00:01:01,300 tankou Google Chrome fè, men anpil pwogram sèvi ak yon 21 00:01:01,300 --> 00:01:04,430 alum pwa-vèsyon an yon pwosesis yo rele yon moso fil. 22 00:01:04,430 --> 00:01:07,190 >> Yon ti moso fil se jis yon lòt inite nan pwosesis, yon seri 23 00:01:07,190 --> 00:01:10,100 enstriksyon oswa kòd ki kapab "kouri", unquote quote, 24 00:01:10,100 --> 00:01:12,560 anmenmtan avèk fil lòt. 25 00:01:12,560 --> 00:01:15,150 Sa a se sa ki fè li posib pou ou pou w browse Facebook 26 00:01:15,150 --> 00:01:17,940 pandan y ap koute m 'nan background nan oswa ki gen de 27 00:01:17,940 --> 00:01:20,790 Videyo YouTube jwe nan menm tan an. 28 00:01:20,790 --> 00:01:24,660 Se konsa, sijè sa a jeneral, yo konnen kòm konkouran, tipikman 29 00:01:24,660 --> 00:01:26,930 pa vini pou yo byen bonè nan kou syans konpitè 30 00:01:26,930 --> 00:01:29,790 paske detay yo pi ba nan nivo mande pou diskisyon sou 31 00:01:29,790 --> 00:01:31,930 opere sistèm ak tankou la. 32 00:01:31,930 --> 00:01:34,170 Sepandan, lang nan pwogram nou itilize nan nan 33 00:01:34,170 --> 00:01:38,000 kòmanse nan CS50, grafouyen, bay kèk zouti debouya 34 00:01:38,000 --> 00:01:40,390 fè li pi fasil ekri pwogram yo ak bagay sa yo plizyè 35 00:01:40,390 --> 00:01:42,390 ale sou nan yon fwa. 36 00:01:42,390 --> 00:01:45,050 >> Lè n'ap bati pwogram grafouyen, ou se toujou ap 37 00:01:45,050 --> 00:01:46,760 k ap travay avèk fil. 38 00:01:46,760 --> 00:01:49,770 Chak script grafouyen, ki se yon blòk kòd ki kòmanse ak 39 00:01:49,770 --> 00:01:52,600 youn nan "lè" moso yo devinèt, ka panse a 40 00:01:52,600 --> 00:01:54,380 kòm yon moso fil apa. 41 00:01:54,380 --> 00:01:58,040 Se pou yo gade nan yon pwogram reyur senp yo wè ki jan sa a travay. 42 00:01:58,040 --> 00:02:01,730 >> Isit la, nou te gen yon objè pwason, oswa luten, ak de Scripts 43 00:02:01,730 --> 00:02:05,000 ke tou de kòmanse lè nou klike sou ti bouton an vèt drapo. 44 00:02:05,000 --> 00:02:07,290 Script nan premye kontwole mouvman pwason an. 45 00:02:07,290 --> 00:02:09,850 Lè yo drapo a vèt klike, ap resevwa pwason a mete 46 00:02:09,850 --> 00:02:12,450 ki sou bò gòch nan ekran an, ki rele sèn nan, 47 00:02:12,450 --> 00:02:14,090 fè fas a sou bò dwat la. 48 00:02:14,090 --> 00:02:17,070 Lè sa a, nan yon seri enstriksyon ki pral kouri pou tout tan, jiskaske nou 49 00:02:17,070 --> 00:02:20,270 sispann pwogram nan, pwason an paten sou bò dwat la, 50 00:02:20,270 --> 00:02:22,900 vire, ale tounen nan bò gòch la, ak 51 00:02:22,900 --> 00:02:24,470 vire ankò. 52 00:02:24,470 --> 00:02:27,410 Script Dezyèm kontwole pwosesis te panse pwason an. 53 00:02:27,410 --> 00:02:29,290 Li sanble ke sa a se yon pwason grangou. 54 00:02:29,290 --> 00:02:32,080 Se konsa, apre ap tann pou 3 segond, pwason, an pral panse, 55 00:02:32,080 --> 00:02:34,420 "Mwen grangou," pou yon dezyèm katriyèm. 56 00:02:34,420 --> 00:02:36,440 Sa a script tou kouri pou tout tan. 57 00:02:36,440 --> 00:02:38,940 E kòm nou wè, ki soti nan kouri pwogram nan pa klike la 58 00:02:38,940 --> 00:02:41,730 vèt drapo, tou de Scripts parèt devan yo egzekite 59 00:02:41,730 --> 00:02:43,100 ansanm. 60 00:02:43,100 --> 00:02:46,460 Pwason an bwote ak panse nan menm tan an. 61 00:02:46,460 --> 00:02:49,030 >> Depi pwason an pòv sanble se konsa grangou, se pou yo ajoute nan kèk 62 00:02:49,030 --> 00:02:50,670 pòf fwomaj pou l 'bay manje. 63 00:02:50,670 --> 00:02:53,060 Èspere ke yo pa pral dezentegre nan dlo a. 64 00:02:53,060 --> 00:02:55,560 Lè nou ajoute nan yon luten dezyèm, nou pral tou kapab 65 00:02:55,560 --> 00:02:58,020 ajoute nan Scripts ki koresponn a ki luten. 66 00:02:58,020 --> 00:02:59,580 Kon sa, gen pral yon lòt seri 67 00:02:59,580 --> 00:03:00,830 fil ki pral kouri. 68 00:03:03,590 --> 00:03:06,270 Pou bay itilizatè a nan kontwòl sou pwogram nou an lè a 69 00:03:06,270 --> 00:03:09,340 pwason grangou vin manje, se pou yo di ke chak fwa Espas a 70 00:03:09,340 --> 00:03:11,840 Bar a frape, boufe fwomaj parèt sou sèn nan pou la 71 00:03:11,840 --> 00:03:13,300 pwason yo manje. 72 00:03:13,300 --> 00:03:15,760 Anvan nou frape Bar a Espas, nou pral vle kenbe fwomaj la 73 00:03:15,760 --> 00:03:19,020 pòf kache pou ke pwason a pa kapab wè yo. 74 00:03:19,020 --> 00:03:21,140 Pou fè sa, nou pral bezwen yon koup la Scripts pou la 75 00:03:21,140 --> 00:03:22,750 pòf fwomaj luten. 76 00:03:22,750 --> 00:03:26,980 Script a an premye, drapo a vèt, yo pral jis kache manje a. 77 00:03:26,980 --> 00:03:29,530 Kontrèman ak Scripts yo lòt nou te ekri, yon sèl sa a pa pral kenbe 78 00:03:29,530 --> 00:03:30,560 kouri pou tout tan. 79 00:03:30,560 --> 00:03:33,250 Li pral kòmanse epi fini trè vit, dwa lè nou klike sou 80 00:03:33,250 --> 00:03:35,000 bouton an drapo vèt. 81 00:03:35,000 --> 00:03:37,180 >> Script nan pwochen nou gen pwal tann pou Bar a Espas yo dwe 82 00:03:37,180 --> 00:03:39,590 bourade anvan pwomenad. 83 00:03:39,590 --> 00:03:42,770 Nou ka rele ap tann pou D 'itilizatè "ap tann" oswa "koute" 84 00:03:42,770 --> 00:03:43,860 pou yon evènman. 85 00:03:43,860 --> 00:03:46,750 Ak kòd la ki ègzekutra lè se yon evènman te resevwa oswa 86 00:03:46,750 --> 00:03:50,280 tande yo rele kòd manyen evènman. 87 00:03:50,280 --> 00:03:53,550 Kap okipe-Espas Bar nou evènman pral montre pòf yo fwomaj sou 88 00:03:53,550 --> 00:03:56,330 ekran an pou ke pwason an ka manje yo. 89 00:03:56,330 --> 00:03:58,880 Nan pwen sa a, tout bagay nan kap bon. 90 00:03:58,880 --> 00:04:00,990 >> Bagay nan pwochen nou bezwen fè se konnen ki jan yo ka resevwa 91 00:04:00,990 --> 00:04:03,570 pwason an reyalize ke gen nan manje yo manje. 92 00:04:03,570 --> 00:04:06,030 Se pou nou ajoute yon lòt ti moso fil bay pwason an ki toujou ap 93 00:04:06,030 --> 00:04:08,790 chèk si wi ou non li nan manyen pòf yo fwomaj. 94 00:04:08,790 --> 00:04:11,510 Nou fè sa nan yon moso fil apa depi nan fason sa a nou kapab 95 00:04:11,510 --> 00:04:13,710 toujou ap tcheke pou manje. 96 00:04:13,710 --> 00:04:16,829 Sinon, nou ta sèlman kapab detanzantan tcheke manje pou yo manje 97 00:04:16,829 --> 00:04:21,180 nan ant glisad vire tèt li, ap tann, oswa panse. 98 00:04:21,180 --> 00:04:22,000 >> OK. 99 00:04:22,000 --> 00:04:23,785 Koulye a, kite a kouri pwogram reyur nou an. 100 00:04:23,785 --> 00:04:26,921 Kòm espere, manje, manje a imedyatman kache a ak 101 00:04:26,921 --> 00:04:28,920 pwason grangou naje retounen ak lide jis tankou anvan an. 102 00:04:32,050 --> 00:04:35,060 Lè nou frape Bar a Espas, boufe yo fwomaj antre nan vi, 103 00:04:35,060 --> 00:04:37,470 ak pwason yo grangou di woo. 104 00:04:37,470 --> 00:04:39,340 Men, tann, sa a, se etranj. 105 00:04:39,340 --> 00:04:42,150 Ki jan vin pwason an "Mwen la grangou" entèwonp te panse 106 00:04:42,150 --> 00:04:43,580 lòt bagay? 107 00:04:43,580 --> 00:04:45,780 Sa a se paske nou pa t 'etabli nenpòt kowòdinasyon 108 00:04:45,780 --> 00:04:47,590 ant twa Scripts yo pwason. 109 00:04:47,590 --> 00:04:50,610 Chak ap kouri nan fil pwòp li yo, enkonsyan nan sa a 110 00:04:50,610 --> 00:04:52,120 lòt moun ap fè a. 111 00:04:52,120 --> 00:04:54,980 Se pou nou ranje sa a anvan nou deplase sou. 112 00:04:54,980 --> 00:04:57,700 >> Kowòdinasyon ant fil se yon tach difisil depi nou 113 00:04:57,700 --> 00:05:00,940 pa gen eksplisit kontwòl sou lè chak ti moso fil kouri oswa 114 00:05:00,940 --> 00:05:02,190 pa kouri. 115 00:05:02,190 --> 00:05:04,710 Pou voye yon mesaj soti nan yon ti moso fil nan yon lòt, nou pral bezwen 116 00:05:04,710 --> 00:05:08,300 yo sèvi ak yon varyab ke nou ka mete, oswa ekri, nan yon sèl moso fil 117 00:05:08,300 --> 00:05:10,170 ak li nan lòt la. 118 00:05:10,170 --> 00:05:12,920 Se pou nou kreye yon varyab foodFound rele ke nou ka mete nan 119 00:05:12,920 --> 00:05:15,530 vre lè pwason an kouri nan pòf yo fwomaj. 120 00:05:15,530 --> 00:05:17,540 Oke, nan kou, nou vle asire w ke nou mete li nan 121 00:05:17,540 --> 00:05:19,240 Fo okòmansman. 122 00:05:19,240 --> 00:05:22,540 Lè sa a, nan fil panse pwason an, nou pral tcheke yo wè si 123 00:05:22,540 --> 00:05:25,400 te pwason nan yo te jwenn manje anvan ou montre "Mwen grangou" la 124 00:05:25,400 --> 00:05:26,770 te panse jarèt. 125 00:05:26,770 --> 00:05:29,670 >> Koulye a, kouri pwogram nan ankò, nou wè ke pwason an 126 00:05:29,670 --> 00:05:31,580 pa jwenn koupe ak panse nan grangou lè a 127 00:05:31,580 --> 00:05:33,820 pòf fwomaj yo soti. 128 00:05:33,820 --> 00:05:36,820 Pwoblèm nan final nou gen se ke pòf yo fwomaj pa ale 129 00:05:36,820 --> 00:05:39,800 disparèt apre pwason an, site unquote, "manje" yo. 130 00:05:39,800 --> 00:05:42,305 Soti nan Scripts yo pwason, gen nan pa gen fason fasil kache fwomaj la 131 00:05:42,305 --> 00:05:44,710 pòf, se konsa nou bezwen voye yon mesaj bay pòf yo fwomaj 132 00:05:44,710 --> 00:05:46,780 luten yo kache tèt li. 133 00:05:46,780 --> 00:05:49,550 Nou ta ka fè sa a ak yon lòt varyab ki pòf yo fwomaj 134 00:05:49,550 --> 00:05:52,680 luten gen aksè a, menm jan tou luten la pwason. 135 00:05:52,680 --> 00:05:55,720 >> Sepandan, gen nan yon fason cleaner fè sa nan ka sa a, 136 00:05:55,720 --> 00:05:57,840 depi olye pou yo voye yon mesaj bay yon script ki nan 137 00:05:57,840 --> 00:06:00,570 yon kote nan mitan an nan pwomenad, nou kapab voye nan 138 00:06:00,570 --> 00:06:03,710 mesaj bay yon script ki nan ap tann yo kòmanse. 139 00:06:03,710 --> 00:06:07,360 Nou fè sa pa gen pwason ki emèt yon evènman, yon sèl nou pral 140 00:06:07,360 --> 00:06:08,800 rele manje yo. 141 00:06:08,800 --> 00:06:11,510 Lè sa a,, nou pral kreye yon script pou pòf yo fwomaj sa pral 142 00:06:11,510 --> 00:06:13,030 rete tann pou evènman sa a. 143 00:06:13,030 --> 00:06:15,560 Sa a se menm jan ak evènman an espas bar yo, eksepte ke sa a 144 00:06:15,560 --> 00:06:19,250 tan, itilizatè a se pa yon sèl la dirèkteman ki vin'n evènman an. 145 00:06:19,250 --> 00:06:22,800 Koulye a, tout sa nou dwe fè se mete tounen foodFound varyab nou an 146 00:06:22,800 --> 00:06:25,750 fo, epi nou kapab kounye a bay pwason an grangou kòm anpil 147 00:06:25,750 --> 00:06:28,470 pòsyon pòf fwomaj jan li vle. 148 00:06:28,470 --> 00:06:30,040 >> Se konsa, pa twò move, dwa? 149 00:06:30,040 --> 00:06:33,400 Nan C, ekri pwogram milti-Threaded se pi plis konplike, 150 00:06:33,400 --> 00:06:35,700 men Basics yo se menm bagay la. 151 00:06:35,700 --> 00:06:38,690 Anyway, mwen espere ke ou gen yon tan gran bati kèk plezi 152 00:06:38,690 --> 00:06:41,030 pwogram konkouran an grafonyen moun. 153 00:06:41,030 --> 00:06:42,570 Non mwen se Nate Hardison. 154 00:06:42,570 --> 00:06:45,260 Sa a se CS50.