char *mktemp(as)char *as;{	register char *s;	register unsigned pid;	register i;	pid = getpid();	s = as;	while (*s++)		;	s--;	while (*--s == 'X') {		*s = (pid%10) + '0';		pid /= 10;	}	s++;	i = 'a';	while (access(as, 0) != -1) {		if (i=='z')			return("/");		*s = i++;	}	return(as);}