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>> DAVID J. Malan: Ejja jikteb programm
li tinkoraġġixxi l-utent għal string u

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mbagħad jipproċedi għall-istampar li string
karattru għal wieħed karattru f'kull linja.

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Issa fil-passat, aħna kien jagħmel dan
probabbilment ma notazzjoni parentesi kwadri,

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trattament effettiv string
firxa ta 'karattri.

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>> Iżda dan iż-żmien, ejja minflok jittratta
string għal dak li huwa verament, a

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pointer jew indirizz.

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Speċifikament, l-indirizz ta '
karattru, verament l-indirizz tal-

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ewwel karattru, f'sekwenza ta '
karattri li aħna kollettivament jafu

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bħala sekwenza.

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>> Ejja ewwel tiddikjara string għal
dak li huwa verament, char *.

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U aħna ser sejħa hija s.

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U mbagħad tassenja din ir-ritorn
valur tal get sekwenza.

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>> Ejja jmiss tagħmel xi żball iċċekkjar.

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Jekk i huwa null, ejja jirritorna minnufih
hekk li aħna ma aċċidentalment

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dereference li pointer null.

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>> Sussegwentement, ejja jtenni fuq il-
karattri i kif ġej.

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Għal int, i gets 0.

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n tirrappreżenta t-tul sensiela ta 's.

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Agħmel dan sakemm i huwa inqas minn n.

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U fuq kull iterazzjoni, inkrement i.

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>> U dak li rridu
tagħmel fuq kull iterazzjoni?

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Ejja issa jistampa fuq kull iterazzjoni
karattru wieħed

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segwit minn linja ġdida.

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Well, liema karattru do
irridu li jistampaw?

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Nipproponi li immorru l-indirizz
li jkun daqs is-somma ta 's plus i.

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>> Issa, għaliex dik l-espressjoni?

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Ukoll, ifakkar li maħżuna fl-i huwa l-
indirizz ta 'l-ewwel karattru

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fil string tagħna, i.

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Sadanittant, i qed jiġu inkrementati fuq
kull iterazzjoni hekk li jibda fil-0,

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imbagħad tmur għal 1, imbagħad tmur għal 2.

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>> Allura fi kliem ieħor, s plus i effettiv
jirrappreżenta l-indirizz ta '

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l-karattru i-th fil-s.

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Hekk jekk immorru f'dak l-indirizz permezz ta '
l-operatur *, aħna ser jkunu għaddejjin għall-

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karattru i-th fil-sekwenza.

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U li l-valur li se jkun
sostitwit placeholder tagħna,

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mija C.

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>> Ejja jikkonfermaw kemm.

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Ejja tiffranka, tiġbor, u
run dan il-programm.

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Kun pointers, dot pointers mmejla.

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U issa jien ser tagħtiha
string bħal bonjour.

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Ikteb.

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>> U fil-fatt, nara H-E-L-L-O, bi
kull char fuq il-linja tagħha stess.

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