ft_atoi.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_atoi.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: juhenriq <dev@juliohenrique.com>           +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/11/06 18:39:51 by juhenriq          #+#    #+#             */
/*   Updated: 2024/11/13 19:12:09 by juhenriq         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

int	ft_atoi(const char *str)
{
	int	num;
	int	sign;

	sign = 1;
	while ((*str >= '\t' && *str <= '\r') || *str == ' ')
		str++;
	num = 0;
	if (*str == '-' || *str == '+')
	{
		if (*str == '-')
			sign *= -1;
		str++;
	}
	while (*str >= '0' && *str <= '9')
		num = (num * 10) + (*str++ - '0');
	return (num * sign);
}