ft_itoa.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_itoa.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: akdemir <akdemir@student.42istanbul.com    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/07/09 20:41:36 by akdemir           #+#    #+#             */
/*   Updated: 2023/07/18 16:13:37 by akdemir          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

size_t	count_len(int n)
{
	size_t	i;

	i = 0;
	if (n == 0)
		return (1);
	if (n == -2147483648)
	{
		n = 147483648;
		i = 2;
	}
	if (n < 0)
	{
		n *= -1;
		i = 1;
	}
	while (n)
	{
		i++;
		n /= 10;
	}
	return (i);
}

char	*ft_itoa(int n)
{
	char	*str;
	int		bas;

	bas = count_len(n);
	str = (char *)ft_calloc(bas + 1, sizeof(char));
	if (!str)
		return (NULL);
	if (n == 0)
		*str = '0';
	else if (n < 0)
	{
		if (n == -2147483648)
		{
			ft_strlcpy(str, "-2147483648", bas + 1);
			return (str);
		}
		str[0] = '-';
		n *= -1;
	}
	while (n != 0)
	{
		*(str + --bas) = (n % 10) + '0';
		n = n / 10;
	}
	return (str);
}
int main()
{
	printf("%d",ft_itoa(90));
	
}