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>> SPEAKER 1: Jirriżulta dan il-programm,
qasir għalkemm huwa,

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attwalment għandha bug.

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F'ċirkostanzi rari, GetString, per
dokumentazzjoni tagħha stess, tista 'ritorn

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xi ħaġa oħra għajr string.

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B'mod speċifiku, sentinella, speċjali
valur imsejħa null -

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N-U-L-L.

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>> Ifisser nulla li ġeneralment, xi ħaġa
marret ħażin biha f'din

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każ, l-utent jista 'jkollok ittajpjat f'tali
string big li ma jkunx jaqbel

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fil-memorja, u għalhekk GetString-jista
ritorn null f'dak il-każ.

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>> Jew jista 'jkun li l-utent b'xi
ma kwalunkwe tip string fil-livelli kollha, b'mod

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f'liema każ l-ebda string jistgħu jiġu lura.

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Għalhekk huwa aħjar li aħna jiskopru
jekk null jew le għandha

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intbagħtet lura kif ġej -

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Huwa biss jekk S ma jkunx null ugwali għandhom
I tipproċedi biex tesegwixxi dan loop.

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>> Fi kliem ieħor, jekk GetString jiġri
li jirritornaw null, jien mhux ser

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aċċidentalment jippruvaw mtennija fuq
karattri li sempliċiment ma jkunux hemm.

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