ft_itoa.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_itoa.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: dmylonas <dmylonas@student.42wolfsburg.de> +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/06/22 12:03:02 by dmylonas          #+#    #+#             */
/*   Updated: 2021/08/18 13:10:49 by dmylonas         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*creator(size_t size, long new_n)
{
	char	*str;

	str = (char *)malloc(size + 1);
	if (!str)
		return (0);
	*(str + size--) = '\0';
	if (new_n < 0)
		new_n *= -1;
	while (new_n > 0)
	{
		*(str + size--) = new_n % 10 + '0';
		new_n /= 10;
	}
	if (size == 0 && str[1] == '\0')
		*(str + size) = '0';
	else if (size == 0 && str[1] != '\0')
		*(str + size) = '-';
	return (str);
}

char	*ft_itoa(int n)
{
	size_t	size;
	long	new_n;

	new_n = n;
	if (n > 0)
		size = 0;
	else
		size = 1;
	while (n)
	{
		n /= 10;
		size++;
	}
	if (size == 0)
		return (0);
	return (creator(size, new_n));
}