printf_bonus/ft_atoi_bonus.c at main · bg-otman/printf_bonus · GitHub

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
30
31
32
33
34
35
36
/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_atoi_bonus.c                                    :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: obouizi <obouizi@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/08/01 13:55:05 by obouizi           #+#    #+#             */
/*   Updated: 2024/12/05 20:46:35 by obouizi          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libftprintf_bonus.h"

long	ft_atoi(const char *str)
{
	int		i;
	long	nb;

	nb = 0;
	i = 0;
	while ((str[i] >= 9 && str[i] <= 13) || str[i] == 32)
		i++;
	while (str[i] == '-' || str[i] == '+'
		|| (str[i] >= 9 && str[i] <= 13) || str[i] == 32 || str[i] == '0'
		|| str[i] == '#')
		i++;
	while (str[i] >= '0' && str[i] <= '9')
	{
		nb = nb * 10 + (str[i] - 48);
		i++;
	}
	if (nb > 2147483647)
		return (-1);
	return (nb);
}