42-libft/ft_memcmp.c at main · teresa-chow/42-libft · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_memcmp.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: tchow-so <tchow-so@student.42porto.com>    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/10/19 11:26:58 by tchow-so          #+#    #+#             */
/*   Updated: 2023/10/19 12:34:14 by tchow-so         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

int	ft_memcmp(const void *s1, const void *s2, size_t n)
{
	unsigned char	*str1;
	unsigned char	*str2;
	size_t			i;

	str1 = (unsigned char *)s1;
	str2 = (unsigned char *)s2;
	i = 0;
	while (i < n)
	{
		if (str1[i] != str2[i])
			return (str1[i] - str2[i]);
		i++;
	}
	return (0);
}
/*
int	main(void)
{
	char	s1[] = "testeteste";
	char	s2[] = "teste12345";
	int	n = 8;

	printf("ft_memcmp: %d\n", ft_memcmp(s1, s2, n));
	printf("memcmp: %d\n", memcmp(s1, s2, n));
}*/