ft_strjoin.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strjoin.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: rblondia <rblondia@student.42lyon.fr>      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/11/03 15:20:17 by rblondia          #+#    #+#             */
/*   Updated: 2021/11/04 13:33:11 by rblondia         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_strjoin(char *s1, char *s2)
{
	char	*new;
	int		index;

	if (!s1 || !s2)
		return (NULL);
	new = malloc((ft_strlen(s1) + ft_strlen(s2)) * sizeof(char));
	if (!new)
		return (NULL);
	index = 0;
	while (s1[index])
	{
		new[index] = s1[index];
		index++;
	}
	index = 0;
	while (s2[index])
	{
		new[ft_strlen(s1) + index] = s2[index];
		index++;
	}
	new[ft_strlen(s1) + index] = '\0';
	free(a);
	free(b);
	return (new);
}