ft_strjoin.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strjoin.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: rjada <marvin@42.fr>                       +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/10/09 19:45:49 by rjada             #+#    #+#             */
/*   Updated: 2021/10/10 19:10:49 by rjada            ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"
#include <stdlib.h>

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

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