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>> SPEAKER: Sa issa, fil-programmi konna
miktub, konna dikjarati prinċipali bħala

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int null prinċipali.

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U dan il-ħin, li null għandha
sempliċiment tispeċifika li l-

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programm ma tieħu kwalunkwe
argumenti linja tal-kmand.

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Fi kliem ieħor, meta utent runs
programm, hu jew hi jista 'jipprovdi kmand

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argumenti linja billi tikteb addizzjonali
kliem jew frażijiet wara tal-programm

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isem fil-prompt.

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>> Ukoll, jekk inti tixtieq program tiegħek biex
jieħdu argumenti linja tal-kmand, wieħed jew

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aktar kliem bħal dawn, għandna bżonn biex jissostitwixxu
null ma 'koppja ta' argumenti.

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Mela ejja tagħmel dan.

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Inkludi CS50.h.

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Inkludi io.h. standard

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Int, prinċipali, u issa minflok null,
Jien ser jispeċifikaw int imsejħa

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argc, u firxa ta '
kordi imsejħa ARGV.

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>> Issa, argc u ARGV huma
sempliċiment konvenzjonijiet.

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Nistgħu ħadthom sejħa dawn l-argumenti
xejn aktar li rridu.

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Imma dak li huwa importanti huwa li argc hija
ta int, għaliex skond id-definizzjoni, huwa

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ser jinkludi l-għadd argument,
in-numru ta 'kliem b'kollox li l-

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utent ittajpjat fil tiegħu jew tagħha fil-pront.

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>> ARGV, sadanittant, argument vector, huwa
ser fil-fatt tkun array ħażna

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kollha tal-kliem li l-utent ikollu
ittajpjat fuq tiegħu jew tagħha fil-pront.

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Ejja tipproċedi biex tagħmel xi ħaġa issa
ma 'wieħed jew aktar minn dawn

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argumenti linja tal-kmand.

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B'mod partikolari, ejja imorru quddiem u print
kwalunkwe kelma t-tipi utent

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wara l-isem tal-programm
fil-prompt.

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>> Parentesi miftuħa, parentesi magħluqa, print
f, mija s, backslash n, comma.

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U issa I bżonn li tgħid print f dak
valur għall-plagg fil dik placeholder.

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Irrid li l-ewwel kelma li l-utent ikollu
ittajpjat wara isem tal-programm.

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U hekk jien ser tispeċifika
ARGV bracket 1, magħluq

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parentesi, virgola.

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>> Issa, għaliex bracket 1 u mhux bracket 0?

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Ukoll, jirriżulta, maħżuna awtomatikament
fil ARGV 0 se tkun l-

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Isem attwali programm.

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Allura l-ewwel kelma li t-tipi utent
wara l-isem tal-programm huwa, minnu

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konvenzjoni, se tkun
maħżuna ARGV 1.

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>> Ejja issa jikkompilaw u
run dan il-programm.

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Kun ARGV 0 dot slash ARGV 0, u
issa kelma bħal hello, jidħol.

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U hemm aħna għandna hija, bonjour.

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