ft_strnstr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strnstr.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: ael-haib <ael-haib@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/01/21 13:15:15 by ael-haib          #+#    #+#             */
/*   Updated: 2024/02/01 01:33:05 by ael-haib         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_strnstr(const char *haystack, const char *needle, size_t len)
{
	size_t	needle_len;

	needle_len = ft_strlen(needle);
	if (needle_len == 0)
	{
		return ((char *)haystack);
	}
	while (*haystack && len >= needle_len)
	{
		if (*haystack == *needle && ft_strncmp(haystack, needle,
				needle_len) == 0)
			return ((char *)haystack);
		haystack++;
		len--;
	}
	return (NULL);
}

/* int main() {
	const char *haystack = "Hello, World!";
	const char *needle = "World";
	size_t n;

	n = 12;
	if (ft_strnstr(haystack, needle, n))
		printf("i found it %s\n", ft_strnstr(haystack, needle, n));

	else (printf("not found it\n"));

	return (0);
} */