ft_atoi.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_atoi.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: jovicto2 <jovicto2@student.42sp.org.br>    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/05/18 10:14:11 by jovicto2          #+#    #+#             */
/*   Updated: 2023/05/18 10:14:42 by jovicto2         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "../includes/libft.h"

int	ft_atoi(const char *nptr)
{
	int	number;
	int	sign;

	number = 0;
	sign = 1;
	while ((*nptr >= '\t' && *nptr <= '\r') || *nptr == ' ')
		nptr++;
	if (*nptr == '-' || *nptr == '+')
		if (*nptr++ == '-')
			sign = -1;
	while (ft_isdigit(*nptr))
		number = (number * 10) + (*nptr++ - '0');
	return (number * sign);
}