/* Searching with strspn(). */

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

main()
{
     char  buf1[80], buf2[80];
     size_t loc;

     /* Input the strings. */

     printf("Enter the string to be searched: ");
     gets(buf1);
     printf("Enter the string containing target characters: ");
     gets(buf2);

     /* Perform the search. */

     loc = strspn(buf1, buf2);

     if ( loc == 0 )
         printf("No match was found.");
     else
         printf("Characters match up to position %d.", loc-1);
     return(0);
}