10-7-normark-recursive.c - Rekursiv udgave af strcmp - fra opgaveregningen i forrige lektion.

Lektion 8 - slide 9 : 27 Program 5

int mystrcmp(const char* s1, const char* s2){
  int result;

  if (*s1 == '\0' && *s2 == '\0') 
    result = 0;
  else if (*s1 == '\0' && *s2 != '\0')
    result = -1;
  else if (*s1 != '\0' && *s2 == '\0')
    result = 1;
  else if (*s1 < *s2)
    result = -1;
  else if (*s1 > *s2)
    result = 1;
  else       /* (*s1 == *s2) */
    result = mystrcmp(s1+1, s2+1);

  return result;
}