ft_strjoin.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strjoin.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: jaeskim <jaeskim@student.42seoul.kr>       +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2020/09/26 21:53:15 by jaeskim           #+#    #+#             */
/*   Updated: 2020/09/27 04:58:18 by jaeskim          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

/*
** ft_strjoin - Concatenate an s1, s2 into a single string.
*/

char	*ft_strjoin(char const *s1, char const *s2)
{
	size_t	len1;
	size_t	len2;
	char	*result;

	len1 = ft_strlen(s1);
	len2 = ft_strlen(s2);
	if (!(result = (char *)malloc(sizeof(char) + (len1 + len2 + 1))))
		return (0);
	ft_memcpy(result, s1, len1);
	ft_memcpy(result + len1, s2, len2);
	result[len1 + len2] = '\0';
	return (result);
}