char strlast(char *s)
{
  if (!*s) return 0;
  while (*s) ++s;
  return *--s;
}

/* Above this line is the solution. */
/* Below this line is a sample program that checks the solution. */

void check(char *s)
{
  printf("The last character of %s is %c.\n",s,strlast(s));
}

int main(void)
{
  check("less fried food");
  check("more aerobic exercise");
  return 0;
}