libft/ft_memcmp.c at master · Failton/libft · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_memcmp.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: pruthann <pruth@student.21-school.ru>      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2020/11/14 15:43:02 by pruthann          #+#    #+#             */
/*   Updated: 2020/11/14 15:43:11 by pruthann         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

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

	str1 = s1;
	str2 = s2;
	i = 0;
	if (n == 0)
		return (0);
	while (i < n)
	{
		if (str1[i] != str2[i])
			return ((unsigned char)str1[i] - (unsigned char)str2[i]);
		i++;
	}
	return (0);
}