/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strjoin.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: tomoron <marvin@42.fr>                     +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/07/24 18:06:14 by tomoron           #+#    #+#             */
/*   Updated: 2023/11/02 10:26:09 by tomoron          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

static int	calc_str_len(char const *s1, char const *s2)
{
	int	res;
	int	i;

	res = 0;
	i = 0;
	while (s1[i])
	{
		i++;
		res++;
	}
	i = 0;
	while (s2[i])
	{
		i++;
		res++;
	}
	return (res);
}

char	*ft_strjoin(char const *s1, char const *s2)
{
	char	*res;
	int		len;
	int		i;
	int		j;

	j = 0;
	if (!s1 || !s2)
		return (0);
	len = calc_str_len(s1, s2);
	res = malloc((len + 1) * sizeof(char));
	while (res && s1[j])
	{
		res[j] = s1[j];
		j++;
	}
	i = 0;
	while (res && s2[i])
	{
		res[j] = s2[i];
		i++;
		j++;
	}
	if (res)
		res[j] = 0;
	return (res);
}