ft_atoi.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_atoi.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: matlopes <matlopes@student.42.rio>         +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/11/07 09:38:49 by matlopes          #+#    #+#             */
/*   Updated: 2023/11/07 09:43:31 by matlopes         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

int	ft_atoi(const char *str)
{
	int	value;
	int	signal;

	value = 0;
	signal = 1;
	while ((*str >= 9 && *str <= 13) || *str == ' ')
		str++;
	if (*str == '-')
		signal = -1;
	if (*str == '-' || *str == '+')
		str++;
	while (*str >= '0' && *str <= '9')
		value = value * 10 + (*str++ - '0');
	return (value * signal);
}