Pointer is a type of an object that refers to a function or an object of another type, possibly adding qualifiers. Pointer may also refer to nothing, which is indicated by

Defined in header <wctype.h>

Defined in header <ctype.h>

Defined in header <stdarg.h>

Usage return statement:

Defined in header <uchar.h>

Defined in header <wchar.h>

Defined in header <threads.h>

Defined in header <math.h>

Defined in header <stdio.h>