int memcmp( void *s1, void *s2, size_t count )

void   *s1;        /* address of first memory buffer */

void   *s2;        /* address of second memory buffer */

size_t  count;     /* size in bytes of comparison */

Synopsis

#include "string.h"

The memcmp function compares the count bytes starting at s1 with the count bytes beginning at s2 .

Parameters

s1 and s2 are addresses of memory buffers at least count bytes in length.

Return Value

If the bytes at s1 are lexicographically less than those at s2 , then memcmp returns a negative number; if the bytes at s1 are lexicographically greater than those at s2 , then memcmp returns a positive number; otherwise they are equal, and memcmp returns 0.

See Also

strcmp