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NULL Vs. 0
Is there any difference between them? (C++) I say this, because I saw #define NULL 0 when I hovered over NULL in Visual Studio.
6 Réponses
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You should not use NULL in C++ anymore. You can replace it with nullptr, which is safer.
NULL in C++ is more of a 0, but nullptr is always a pointer.
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0 is an integer value, like any other. Null means "no value assigned".
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Because "zero seconds" lasts the same timespan as "no seconds" ;)
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Then, how come time(NULL) and time(0) both work?
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Ooooh! That makes sense. Thanks! :D
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So, int main() and int main(NULL) are the same?