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# NULL

From cppreference.com
< c‎ | types

Defined in header `<stddef.h>` |  |
Defined in header `<string.h>` |  |
Defined in header `<wchar.h>` |  |
Defined in header `<time.h>` |  |
Defined in header `<locale.h>` |  |
Defined in header `<stdio.h>` |  |
#define NULL /*implementation-defined*/ |  |

Expands into implementation-defined null-pointer constant.

### [edit] See also

C++ documentation for NULL

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