memcmp Function

It compares the first count characters between buf1 and buf2 .

It returns an integer as follows:

< 0 for buf1 is less than buf2
0 for buf1 is equal to buf2
> 0 for buf1 is greater than buf2

Syntax:

  int memcmp(const void *buf1, const void *buf2, size_t count);

Example:

#include <stdio.h>

#include <string.h>

#include <stdlib.h>



  int main()

  {

    int outcome, len, l1, l2;



    char *str = "asdf";

    char *str1 = "asdfasdf";



    /* find the length of shortest string */

    l1 = strlen(str);

    l2 = strlen(str1);

    len = l1 < l2 ? l1:l2;



    outcome = memcmp(str, str1, len);



    if(!outcome)

        printf("Equal");

    else if(outcome<0)

        printf("First less than second.");

    else

        printf("First greater than second.");



    return 0;

  }

Back