memcmp
---compare two memory areas#include <string.h> int memcmp(const void *s1, const void *s2, size_t n);Description
Returns
The function returns an integer greater than, equal to or
less than zero according to whether the object pointed to by
s1 is greater than, equal to or less than the object
pointed to by s2.
Portability
memcmp
is ANSI C.
memcmp
requires no supporting OS subroutines.