04_ft_strstr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   04_ft_strstr.c                                     :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: anajmi <anajmi@student.42.fr>              +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/07/05 15:24:29 by anajmi            #+#    #+#             */
/*   Updated: 2021/07/07 16:42:44 by anajmi           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include <stdio.h>
#include <string.h>

char	*ft_strcpy(char *dest, char *src);

char	*ft_strstr(char *str, char *to_find)
{
	unsigned int	i;
	unsigned int	j;

	if (*to_find == '\0')
		return (str);
	i = 0;
	while (str[i] != '\0')
	{
		j = 0;
		while (str[i + j] == to_find[j])
		{
			if (to_find[j + 1] == '\0')
				return (&str[i]);
			j++;
		}
		i++;
	}
	return (0);
}

int	main(void)
{
	char	str[50];
	char	to_find[50];

	ft_strcpy(str, "ghost every ");
	ft_strcpy(to_find, "os");
	puts(ft_strstr(str, to_find));
	puts(strstr(str, to_find));
	return (0);
}