ft_strstr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strstr.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: pawaters <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/11/08 09:00:59 by pawaters          #+#    #+#             */
/*   Updated: 2021/12/09 11:58:04 by pwaters          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_strstr(const char *s1, const char *s2)
{
	int	i;
	int	j;

	i = 0;
	if (s1[0] == '\0' && s2[0] == '\0')
		return ((char *)s1);
	while (*(s1 + i) != '\0')
	{
		j = 0;
		while (*(s1 + i + j) == *(s2 + j) && s2[j] != '\0')
			j++;
		if (*(s2 + j) == '\0')
			return ((char *)s1 + i);
		i++;
	}
	return (NULL);
}