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>> [MIZIK jwe]

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>> ROB BOWDEN: Hi.

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Mwen se Rob.

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Li kite yo jwenn visye.

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>> Se konsa, premye bagay nou bezwen fè
se mande itilizatè a egzakteman ki jan

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se pi chanjman dwe a.

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Se konsa, isit la, nou wè nou gen
yon fè / pandan y ap bouk.

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Apre sa, nou ap mete dola
egal a GetFloat.

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Ki sa ki se GetFloat?

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Se youn nan fonksyon yo nan la
Bibliyotèk CS50 ki vin yon

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flote soti nan itilizatè a.

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Sonje byen, yo nan lòd yo sèvi ak sa fonksyon,
nou bezwen Hash gen ladan

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CS50.h nan tèt la.

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>> Se konsa, yon fwa nou genyen ki valè ki soti nan
itilizatè, nou bezwen tou yo dwe asire ke

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li nan yon valè ki valid.

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Nou pa ka dwe lajan negatif.

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Se konsa, sa a, se bi pou
nan sa a fè / pandan y ap bouk.

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Nou kontinye loupin pandan y ap dola
se mwens pase zewo.

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Ak yon fè / pandan y ap bouk se bagay ki dwat
yo sèvi ak isit la, depi nou bezwen mande a

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itilizatè omwen yon fwa pou konbyen
se kantite lajan ou dwe a.

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>> Se konsa, yon fwa nou gen ladan nimewo de dola,
nou wè isit la nou gen santim Int

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egal wonn dola fwa
CENTS_PER_DOLLAR.

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Nan tèt la, nou wè ke
CENTS_PER_DOLLAR se

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sansiblite defini kòm 100.

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Se konsa, sa se liy sa a ap fè?

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>> Oke, si ou sonje, pwen k ap flote
valè yo pa byen presi.

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Kontrèman ak nonm antye yo, nou pa ka reprezante
valè k ap flote pwen egzakteman.

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Genyen toujou kèk sòt
nan enpresizyon.

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Se konsa, nou pi pito travay ak jis nonm antye
nan tout pwoblèm sa a.

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Ak isit la, si itilizatè a te antre nan $ 3,42,
nou ap konvèti ke yo 342 santim ak

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awondi, jis debarase m de
nenpòt nan ki enpresizyon.

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>> Se konsa, yon fwa nou gen ki kantite santim nan
yon nonb antye relatif, nou ka kontinye avèk la

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rès nan pwogram nan.

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Nou wè isit la ke nou ap deklare nonb antye ki pè
pyès monnen ki nou ap sèlman yo sèvi ak

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kenbe tras nan total la
kantite pyès monnen.

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Isit la, nou gen nou an premye bouk ti tan.

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>> Nou wè pandan y ap santim se pi gran pase oswa
egal a sezon, ki pi wo a, se hash

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defini kòm 25, pandan y ap ki vre, nou
vle enkreman nimewo nou an pyès monnen

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ak santim dekrwasans pa trimès.

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Sonje ke sentaks sa a
ki ekivalan a santim

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egal santim mwens trimès.

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Sa yo se menm bagay la.

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>> Se konsa, sa sa a se bouk pandan y ap fè?

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Lide a isit la se ke, si mwen konnen $ 3,42
ki dwe a, mwen kapab kontinye bay

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trimès jouk tan mwen pa kapab bay
trimès ankò.

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Mwen pa kapab bay trimès nenpòt ki plis,
yon fwa mwen te bay $ 3,25.

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>> Se konsa, lè sa a, yon fwa sa a, se ka a, nou pral
kraze soti nan sa a bouk ti tan.

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Santim pral rete nan la 17 santim.

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Epitou, n ap kontinye desann nan pwochen an
pandan y ap bouk kote nou di, pandan y ap santim

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Kisa ki pi konsekan pase oswa egal a pyès dis santim ameriken.

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>> Epi, koulye a nou ap fè menm egzak la
bagay nou te fè sa nan ka a trimès,

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sòf ak dis santim.

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Se konsa, avèk $ 0.17, nou pral bouk jouk nou kapab
pa gen okenn ankò bay yon pyès dis santim ameriken, ki se

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egzakteman yon fwa.

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Lè sa a, nou pral dwe kite ak 7 santim.

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>> Lè sa a, nou pral kontinye sou vennsenk kòb, ki
pral bouk jiskaske nou pa kapab bay

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nenpòt ki vennsenk kòb pi plis, ki pral
kite nou ak de santim.

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Lè sa a,, desann nan pati anba a, nou gen
peni, ki pral bouk epi yo pral

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finalman kite nou ak zewo santim.

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Lè sa a, nan fen a, nou jis bezwen
enprime soti nimewo nou an pyès monnen.

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>> Se konsa, pwogram sa a se parfe kòrèk.

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Men, nou ka aktyèlman fè yon ti jan pi byen.

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Koulye a, si m 'di sa mwen dwe ou $ 10,000,
ou pa ta dwe bezwen ale isit la nan yon sèl

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trimès, de trimès, twa ka.

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Ou ta dwe konnen imedyatman ki
Mwen dwe ou 40,000 trimès.

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>> Koulye a, kite yo gade nan yon pwogram ki
manch li yon ti jan pi byen.

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Nan vèsyon sa-a de bagay sa yo, nou toujou bezwen
mande itilizatè a pou kantite lajan an nan

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chanje yo ke yo vle nan egzakteman
menm jan an nou te fè anvan an.

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Nou bezwen awondi li egzakteman
wout la nou te fè anvan an.

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Apre sa, nou toujou gen pyès monnen nou an nonb antye ki pè
te deklare egzakteman menm jan ak anvan.

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>> Se konsa, isit la nan kote bagay yo
jwenn yon ti jan diferan.

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Nou ap fè pyès monnen plis egal
santim divize pa sezon

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kote trimès se 25.

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Ki sa sa ap di se, se pran kòm anpil
trimès kòm ka ale nan santim epi ajoute

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ke yo pyès monnen.

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>> Se konsa, si santim se 142, 142 divize
pa 25 ban nou 5.

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Sonje ke divizyon nonb antye ki pè
otomatikman tronk.

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Se konsa, nou ap fè pyès monnen plis egal 5.

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>> Touswit apre yo fin sa a, nou ap di
santim santim egal sezon mod.

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Sonje ke operatè a mod bay
nou rès la apre divizyon.

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Se konsa, 142 sezon mod, ki pral ba
se 142 mwens 125, ki se 17.

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Sa a rès la apre
fè 142 divize pa 25.

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>> Se konsa, koulye santim ki egal a 17.

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Lèfini, nou fè menm bagay egzak la
bagay pou dis santim.

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17 divize pa 10 pral ban nou 1.

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Apre sa, nou ajoute ke yo pyès monnen.

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Lè sa a, nou mete santim
gen 17 mod 10, ki se 7.

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>> Lè sa a, menm bagay la pou senk santim.

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7 divize pa 5 se 1.

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Add ke yo pyès monnen.

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Lè sa a, 7 mod 5 se 2.

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Epi sa a, santim nou an.

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>> Lè sa a,, pou peni, gen nan pa gen reyèl
pwen nan divize oswa modin, depi,

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si nou gen $ 0.2 rete, nou ka
jis imedyatman ajoute ke yo

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nimewo nou an pyès monnen.

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E finalman, nou bezwen enprime soti nou an
kantite kòb monnen yo epi, opsyonèlman,

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retounen 0 nan fen pwogram nou an
siyifi tout bagay te travay.

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>> Non mwen se Rob.

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Lè sa a te visye.

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>> [MIZIK jwe]

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