1 #include "byte.h"

     2 

     3 unsigned int byte_chr(s,n,c)

     4 char *s;

     5 register unsigned int n;

     6 int c;

     7 {

     8   register char ch;

     9   register char *t;

    10 

    11   ch = c;

    12   t = s;

    13   for (;;) {

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

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

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

    17     if (!n) break; if (*t == ch) break; ++t; --n;

    18   }

    19   return t - s;

    20 }