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>> [Daqq tal-mużika]

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>> ZAMYLA Chan: Hello, dinja.

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Ejja tagħmel l-ewwel programm C tagħna.

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00:00:13,670 --> 00:00:17,720
>> Biex tikteb programmi tagħna, aħna ser tkun
jaħdmu fil-Appliance CS50.

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00:00:17,720 --> 00:00:21,565
Huwa magna virtwali li tmexxi
kompjuter ġewwa kompjuter tiegħek.

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00:00:21,565 --> 00:00:23,240
>> Dan għandu ħafna benefiċċji.

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00:00:23,240 --> 00:00:28,140
Għal waħda, huwa diġà stabbilit bil-lott
ta 'għodod u ikollok bzonn għal CS50.

8
00:00:28,140 --> 00:00:32,560
Dan ifisser ukoll li jekk għandek Mac,
PC, Linux, kulħadd bl-użu

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istess ħaġa.

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Jekk int ma jitniżżel l-
CS50 Appliance għadhom, mur

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manual.cs50.net/appliance.

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>> Għandi Appliance tiegħi hawnhekk full screen,
imma int tista 'wkoll ikollhom bħala f'wiċċ l-ilma

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tieqa, jekk inti tixtieq.

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I ħafna tinkoraġġixxi twaqqif ta 'Dropbox
kont għal kulħadd ta 'CS50 tiegħek

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00:00:51,190 --> 00:00:52,170
kors tax-xogħol.

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B'dan il-mod, fil-każ li jiġri xi ħaġa ma '
kompjuter tiegħek jew il-Appliance,

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00:00:56,400 --> 00:00:58,440
għandek backup fil-sħaba.

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>> Ejja tiftaħ terminal tagħna ewwel.

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It-terminal huwa interface li aħna
jistgħu jużaw biex jinnavigaw madwar tagħna

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00:01:03,860 --> 00:01:06,825
, kompjuter jiktbu, jikkompilaw,
u run kodiċi.

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Aħna ser attwalment jiktbu aktar ta '
kodiċi tagħna fl gedit, għalkemm.

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>> Mela ejja tressaq dan up issa.

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Hija ser jressaqna għal dokument unsaved.

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Avviż li nibda ittajpjar kodiċi C tiegħi -

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ma jkunx hemm xi sintassi tenfasizza.

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Sintassi tenfasizza jgħinna viżwalment mill
kulur tipi ta 'data, funzjonijiet, u

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varjabbli differenti.

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>> Mela ejja jiffrankaw dan il-programm fis
folder, u sejħa hija hello.c.

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Dan il-mod, aħna ser ikollhom sintassi
jenfasizza kif aħna tip.

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00:01:33,960 --> 00:01:42,660

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Aħna ser tibda billi jinkludi
żewġ libreriji -

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jinkludu cs50.h u jinkludu stdio.h.

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Dan il-mod, il-programm tagħna se jkollhom aċċess
għall-funzjonijiet ġewwa l-CS50

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Standard I / O librerija.

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>> Kull programm jeħtieġ funzjoni ewlenija tiegħu,
hekk ejja tikteb li hawn -

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prinċipali (vojt) ma 'żewġ ċineg kaboċċi.

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U issa hawnhekk huwa fejn inti ser
jiktbu program tiegħek.

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>> Għall-ewwel programm tagħna, aħna ser ikollu biss
linja waħda printf, hello, dinja!

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00:02:15,395 --> 00:02:18,070

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Bil-linja ġdida dritt
hawn għall-estetika.

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>> Ladarba I ħlief, I tixtieq li tmexxi programm tiegħi.

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Hekk jien ser tiftaħ terminal tiegħi issa.

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I tibda tmur fl-direttorju dar tiegħi, imma
għall-aċċess hello.c, I jeħtieġ li jkunu

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l-istess direttorju jew folder.

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Allura f'dan id-dritt fil-pront hawn,
Jien ser cd tip -

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bidla direttorju -

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Dropbox/2013/walkthroughs.

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U issa jien fil walkthroughs folder tiegħi.

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>> Say I tinsa dak tiegħi
folders huma msejħa.

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Imbagħad I ser tip ls, li se
lista kollha tal-fajls fil-

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dan id-direttorju kurrenti.

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Allura jinbidlu direttorji ftit
darbiet aktar, nsib hello.c.

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U dan il-proċess huwa analogu għal
navigazzjoni permezz Finder fuq MACs jew

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My Computer fil-Windows.

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Fil-fatt, I jistgħu anki jagħmlu folders jew
direttorji dritt mill-terminal

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bl-għamla Direttorju
kmand, mkdir.

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>> Jekk inti tixtieq li tneħħi fajl, inti tista '
tneħħiha mill-terminal ma rn,

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segwit bl-isem tal-fajl inti
tixtieq li tneħħi, u t-tajping y għal iva

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meta l-terminal jistaqsikom
biex tikkonferma t-tħassir.

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>> Kun żgur li tesplora terminal.

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Hemm tunnellata ta 'shortcuts tal-keyboard
biex jgħinuk out.

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Ukoll, gedit attwalment għandha żgħira
terminal fil-qiegħ hawn fejn inti

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tista 'tagħmel l-istess affarijiet li għamilna
fil-terminal akbar tagħna.

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>> Għal issa, ejja jikkompilaw kodiċi tagħna
mal-kmand li ġej -

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jagħmlu bonjour.

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Issa inti għandek tara linja ma
mazz ta 'kmandi.

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Jagħmlu huwa essenzjalment ppakkjar li biss
jibgħat lista ta 'kmandi għall-

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terminal meta inti tip
f'dak kelma waħda.

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F'dan il-każ, huwa taħdem clang, a
kompilatur ma 'sett ta' struzzjonijiet -

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bnadar -

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dwar kif jikkompilaw il-programm.

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00:04:03,310 --> 00:04:08,460
>> Issa li konna miġbura hello.c, jekk aħna
ls, għandna tara eżekutibbli fajl

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00:04:08,460 --> 00:04:11,720
imsejħa bonjour fl-direttorju tagħna.

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00:04:11,720 --> 00:04:18,430
We run billi jittajpja. / Hello, u
hemm output programm tagħna.

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>> Hello, dinja.

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00:04:19,380 --> 00:04:21,670
Jisimni Zamyla, u dan huwa CS50.

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