/* strcspn - Calculate the length of the initial substring of @s which does not contain letters in @reject @s: The string to be searched @reject: The string to avoid  */
size_t strcspn(const char *s, const char *reject)
/* strcspn - Calculate the length of the initial substring of @s which does not contain letters in @reject @s: The string to be searched @reject: The string to avoid  */
size_t strcspn(const char *s, const char *reject)
{
	const char *p;
	const char *r;
	size_t count = 0;
	for (p = s; *p != '\0'; ++p) {
		for (r = reject; *r != '\0'; ++r) {
			if (*p == *r)
				return count;
		}
		++count;
	}
	return count;
}