#include <string.h>
#include <stdio.h>                  /* for printf */
void tst_strrchr (void) {
   char *s;
   char buf [] = "This is a test";
   s = strrchr (buf, 't');
   if (s != NULL)
      printf ("found the last 't' at %s\n", s);
}

   void tst_strrpos ( char *s) {
   int i;
   i = strpos (s, ' ');
   if (i == -1)
      printf ("No spaces found in %s\n", s);
   else
      printf ("Last space in %s is at offset %d\n", s, i);
}