/* * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands. * See the copyright notice in the ACK home directory, in the file "Copyright". */ /* $Header$ */ #include char * strchr(register const char *s, int c) { register char c1 = (char) c; do { if (*s == c1) return s; } while (*s++ != '\0'); return (char *)NULL; }