Q:

A null pointer does not point to any object. Code can check whether a pointer is null before attempting to use it. There are several ways to obtain a null pointer

KasimKamal
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2022-07-03
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A null pointer does not point to any object. Code can check whether a pointer is null before attempting to use it. There are several ways to obtain a null pointer.

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KasimKamal
2022-07-03
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int *p1 = nullptr; // equivalent to int *p1 = 0;
int *p2 = 0; // directly initializes p2 from the literal constant 0
// must #include cstdlib
int *p3 = NULL; // equivalent to int *p3 = 0;

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