1 #include "str.h"

     2 

     3 unsigned int str_chr(s,c)

     4 register char *s;

     5 int c;

     6 {

     7   register char ch;

     8   register char *t;

     9 

    10   ch = c;

    11   t = s;

    12   for (;;) {

    13     if (!*t) break; if (*t == ch) break; ++t;

    14     if (!*t) break; if (*t == ch) break; ++t;

    15     if (!*t) break; if (*t == ch) break; ++t;

    16     if (!*t) break; if (*t == ch) break; ++t;

    17   }

    18   return t - s;

    19 }