libft/ft_itoa.c at master · 7amedalhashmi/libft · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_itoa.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: halhashm <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/10/09 23:22:12 by halhashm          #+#    #+#             */
/*   Updated: 2021/10/13 00:17:37 by halhashm         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_strcpy(char *s, char *d)
{
	int		i;

	i = 0;
	while (s[i])
	{
		d[i] = s[i];
		i++;
	}
	d[i] = '\0';
	return (d);
}

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

	str = (char *)malloc(sizeof(char) * 2);
	if (!str)
		return (NULL);
	if (n == -2147483648)
		return (ft_strcpy(str, "-2147483648"));
	if (n < 0)
	{
		str[0] = '-';
		str[1] = '\0';
		str = ft_strjoin(str, ft_itoa(-n));
	}
	else if (n >= 10)
		str = ft_strjoin(ft_itoa(n / 10), ft_itoa(n % 10));
	else if (n > 0 && n < 10)
	{
		str[0] = n + '0';
		str[1] = '\0';
	}
	return (str);
}