missing/strchr.c

   1 /* public domain rewrite of strchr(3) and strrchr(3) */
   2
   3 char *
   4 strchr(const char *s, int c)
   5 {
   6     if (c == 0) return (char *)s + strlen(s);
   7     while (*s) {
   8         if (*s == c)
   9             return (char *)s;
  10         s++;
  11     }
  12     return 0;
  13 }
  14
  15 char *
  16 strrchr(const char *s, int c)
  17 {
  18     const char *save;
  19
  20     if (c == 0) return (char *)s + strlen(s);
  21     save = 0;
  22     while (*s) {
  23         if (*s == c)
  24             save = s;
  25         s++;
  26     }
  27     return (char *)save;
  28 }