libft/ft_strncmp.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strncmp.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: kdx    <marvin@42.fr>                      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/07/18 18:00:30 by kdx               #+#    #+#             */
/*   Updated: 2022/10/14 02:34:13 by kdx              ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

int	ft_strncmp(const char *s1, const char *s2, size_t n)
{
	if (n == 0)
		return (0);
	n -= 1;
	while (n > 0 && (*s1 != '\0' || *s2 != '\0'))
	{
		if (*s1 != *s2)
			return ((unsigned char)*s1 - (unsigned char)*s2);
		s1 += 1;
		s2 += 1;
		n -= 1;
	}
	return ((unsigned char)*s1 - (unsigned char)*s2);
}