ft_atoi.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_atoi.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: mbaypara <mbaypara@student.42kocaeli.co    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/12/05 13:40:56 by mbaypara          #+#    #+#             */
/*   Updated: 2023/12/20 13:02:04 by mbaypara         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

int	ft_atoi(const char *str)
{
	int	i;
	int	sign;
	int	result;

	i = 0;
	sign = 1;
	result = 0;
	while (str[i] == 32 || (str[i] >= 9 && str[i] <= 13))
		i++;
	if (str[i] == '-')
	{
		sign = -1;
		i++;
	}
	else if (str[i] == '+')
		i++;
	while (str[i] != '\0' && str[i] >= '0' && str[i] <= '9')
	{
		result *= 10;
		result += str[i] - '0';
		i++;
	}
	return (result * sign);
}