#include <string.h>
#include <stdio.h>                  /* for printf */
void tst_memchr (void) {
   static char src1 [100] ="Search this string from the start";    
   void * c;
   c = memchr (src1, 'g', sizeof (src1));
   if (c == NULL)
      printf ("'g' was not found in the buffer\n");
   else
   printf ("found 'g' in the buffer\n");
}