/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strjoin.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: thrieg <thrieg@student.42mulhouse.fr>      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/10/15 12:14:45 by thrieg            #+#    #+#             */
/*   Updated: 2025/02/16 19:04:47 by thrieg           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

//returns NULL if any argument is null or if an allocation fails
char	*ft_strjoin(char const *s1, char const *s2)
{
	char	*ret;
	int		i;
	int		j;

	if (!s1 || !s2)
		return (NULL);
	ret = malloc(sizeof(char) * (ft_strlen(s1) + ft_strlen(s2) + 1));
	if (!ret)
		return (NULL);
	i = 0;
	while (s1[i])
	{
		ret[i] = s1[i];
		i++;
	}
	j = 0;
	while (s2[j])
	{
		ret[i] = s2[j];
		i++;
		j++;
	}
	ret[i] = '\0';
	return (ret);
}