ft_strncmp.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strncmp.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: mriant <marvin@42.fr>                      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/11/30 15:20:11 by mriant            #+#    #+#             */
/*   Updated: 2021/11/30 15:59:49 by mriant           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

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

	if (n == 0)
		return (0);
	i = 0;
	str1 = (unsigned char *) s1;
	str2 = (unsigned char *) s2;
	while (i < n && str1[i] && str2[i])
	{
		if (str1[i] != str2[i])
			return (str1[i] - str2[i]);
		i ++;
	}
	if (i == n)
		return (str1[i - 1] - str2[i - 1]);
	return (str1[i] - str2[i]);
}