/* The strncmp() function. */

#include <stdio.h>
#include <string.h>

char str1[] = "The first string.";
char str2[] = "The second string.";

main()
{
     size_t n, x;

     puts(str1);
     puts(str2);

     while (1)
     {
         puts("\n\nEnter number of characters to compare, 0 to exit.");
         scanf("%d", &n);

         if (n <= 0)
             break;

         x = strncmp(str1, str2, n);

         printf("\nComparing %d characters, strncmp() returns %d.",
                 n, x);
     }
     return(0);
}