1 #include <string.h>
2 
strtok(char * restrict s,const char * restrict sep)3 char *strtok(char *restrict s, const char *restrict sep)
4 {
5 	static char *p;
6 	if (!s && !(s = p)) return NULL;
7 	s += strspn(s, sep);
8 	if (!*s) return p = 0;
9 	p = s + strcspn(s, sep);
10 	if (*p) *p++ = 0;
11 	else p = 0;
12 	return s;
13 }
14