ft_strjoin.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strjoin.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: mbishop- <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/09/12 14:58:34 by mbishop-          #+#    #+#             */
/*   Updated: 2021/09/12 14:58:36 by mbishop-         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_strjoin(char const *s1, char const *s2)
{
	char	*str;

	if (s1 == NULL || s2 == NULL)
		return (NULL);
	str = (char *)malloc(sizeof(str) * (ft_strlen(s1) + ft_strlen(s2) + 1));
	if (str == NULL)
		return (NULL);
	ft_strlcpy(str, s1, ft_strlen(s1) + 1);
	ft_strlcat(str, s2, ft_strlen(s1) + ft_strlen(s2) + 1);
	return (str);
}
/* allocates and returns a new string which is the result of the concatenation 
** of s1 and s2. */