1
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2
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>> Oratè 1: Dènye fwa nou analize
nonm antye yo, sonje ke nou itilize kèk

3
00:00:03,440 --> 00:00:07,810
Ekspresyon Boolean yo tcheke si yon itilizatè a
n D 'te genyen ant nimewo

4
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tankou 0 ak 3, 4 ak 7, ak 8 ak 10.

5
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Oke, nou te fè sa lè l sèvi avèk si la ak lòt moun
si a, men li vire soti ou kapab

6
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aplike ki lojik menm lè l sèvi avèk yon
diferan konstwi pwogram

7
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tout ansanm pandan y ap toujou reyisi
jisteman rezilta a menm.

8
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An reyalite, nou ka prezante yon bagay
rele yon switch ki pèmèt nou

9
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chanje konpòtman nou an depann sou
valè a nan kèk varyab.

10
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>> Se pou yo bay sa a yon eseye.

11
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Pou fè sa, mwen premye pral genyen ladan yo
bibliyotèk la cs50 pa fason pou cs50.h.

12
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Mwen tou ale nan gen ladan estanda a
bibliyotèk pa fason pou estanda Mwen / O.h.

13
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Apre sa, mwen pral deklare prensipal nan
wout la nòmal, int anile prensipal la.

14
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Louvri Curly atèl.

15
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Fèmen Curly atèl.

16
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Epi, koulye a mwen pral mande a
itilizatè pou yon nonb antye ki pè.

17
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>> Printf, ban m 'yon Int
ant 1 ak 10.

18
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Epi, koulye a mwen pral jwenn
ki Int lè l sèvi avèk cs50 nan

19
00:00:59,310 --> 00:01:01,590
bibliyotèk fonksyone, GetInt.

20
00:01:01,590 --> 00:01:06,140
Int, se pou yo rele l 'n, egal GetInt.

21
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Epi, koulye a mwen pral fè yon ti jan
nan analiz sou sa nonb antye ki pè.

22
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On ti jan abitrèman, men ak sa a
nouvo konstwi li te ye kòm yon switch.

23
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Chanje sou valè n jan sa a.

24
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>> Nan ka a ke n egal 1, oswa nan la
ka sa a n egal 2, oswa nan ka a

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ki n egal 3, ale pi devan epi
egzekite liy sa a nan kòd.

26
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Printf ou pran yon Int piti, ti repo.

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Koulye a, mwen bezwen aplike ekivalan a
nan yon èlt senp pa

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enumere kèk ka adisyonèl.

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>> Nan ka a ke n egal 4, oswa nan la
ka sa a n egal 5, oswa nan ka a

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ki n egal 6, oswa nan ka a ki n
egal 7, ale pi devan epi enprime soti ou

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pran yon Int mwayen an.

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Kraze.

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Koulye a, nan ka a itilizatè a chwazi
yon gwo kantite, se pou yo

34
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detekte ki jan sa a.

35
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>> Nan ka a ki itilizatè a pran uit
oswa nan ka a ki itilizatè a chwazi

36
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nèf, oswa nan ka a ki itilizatè a chwazi
10, ale pi devan epi enprime soti ou

37
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pran yon gwo Int.

38
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Kraze.

39
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Èlt, si yon itilizatè pa t 'chwazi yon nimewo
ki tonbe nan nenpòt nan 10 ka sa yo,

40
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kite a gen kèk konpòtman default.

41
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Ki nan ka sa a yo pral jan sa a.

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>> Default, printf, ou pran
yon valab Int.

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Kraze.

45
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Koulye a, si mwen sove sa a ransanble dosye
l 'ak fè switch.

46
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Kouri l 'ak switch koupe..

47
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Se pou yo fè yon koup la chèk saniti.

48
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Mwen pral chwazi yon Int a 1.

49
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Apre sa, ID pran yon ti Int.

50
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>> Se pou nou fè kounye a. Koupe switch.

51
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Apre sa, tape nan di, negatif 1.

52
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Apre sa, ID pran yon Int valab.

53
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Nan fen jounen an, switch la
konstwi pa pèmèt ou fè

54
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anyen ke ou pa t 'kapab deja fè
ki gen plis abitye a si, lòt moun si,

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lòt moun konstwi.

56
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Men, si ou gen yon lis fini nan valè
ke w ap tcheke pou, yon

57
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deklarasyon switch ka trè
byen fè kòd ou plis

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kòd lòt, oswa pi plis lizib.

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