ft_itoa.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_itoa.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: johnavar <johnavar@student.42berlin.de>    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/05/05 12:40:11 by johnavar          #+#    #+#             */
/*   Updated: 2024/02/05 18:08:49 by sebasnadu        ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

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

static size_t	nbr_len(int nbr)
{
	int	len;

	len = 0;
	if (nbr <= 0)
		len++;
	while (nbr)
	{
		len++;
		nbr = nbr / 10;
	}
	return (len);
}

char	*ft_itoa(int n)
{
	long	nbr;
	size_t	len;
	char	*str;

	len = nbr_len(n);
	str = (char *)malloc(sizeof(char) * len + 1);
	if (!str)
		return (NULL);
	nbr = n;
	if (nbr < 0)
	{
		str[0] = '-';
		nbr *= -1;
	}
	if (nbr == 0)
		str[0] = '0';
	str[len--] = '\0';
	while (nbr != 0)
	{
		str[len--] = (nbr % 10) + '0';
		nbr = nbr / 10;
	}
	return (str);
}