ft_strjoin.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strjoin.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: acalin-b <acalin-b@student.42madrid.com    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/03/18 17:55:19 by acalin-b          #+#    #+#             */
/*   Updated: 2023/03/22 11:19:09 by acalin-b         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

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

char	*ft_strjoin(char const *s1, char const *s2)
{
	int		i;
	int		j;
	char	*s3;

	i = 0;
	j = 0;
	if (s1 == NULL || s2 == NULL)
		return (NULL);
	s3 = (char *)malloc(sizeof(char) * (ft_strlen(s1) + ft_strlen(s2) + 1));
	if (s1 == NULL || s2 == NULL || s3 == NULL)
		return (NULL);
	while (*s1)
		s3[i++] = *s1++;
	while (*s2)
		s3[i++] = *s2++;
	s3[i] = '\0';
	return (s3);
}