/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_itoa.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: adjoly <adjoly@student.42angouleme.fr>     +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/11/05 16:26:26 by adjoly            #+#    #+#             */
/*   Updated: 2024/02/04 14:45:39 by adjoly           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "../libft.h"

static int	ft_count_digit(int n)
{
	int	i;

	i = 0;
	if (n < 0)
		i++;
	if (n == 0)
		return (1);
	while (n)
	{
		n /= 10;
		i++;
	}
	return (i);
}

char	*ft_itoa(int n)
{
	char	*result;
	int		i;

	i = ft_count_digit(n);
	if (n == 0)
		return (ft_strdup("0"));
	if (n == -2147483648)
		return (ft_strdup("-2147483648"));
	result = malloc(sizeof(char) * (i + 1));
	if (result == NULL)
		return (NULL);
	result[i--] = '\0';
	if (n < 0)
	{
		result[0] = '-';
		n = -n;
	}
	while (n)
	{
		result[i] = n % 10 + '0';
		n /= 10;
		i--;
	}
	return (result);
}