ft_strjoin.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strjoin.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: amarjan <amarjan@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2025/11/02 15:20:23 by amarjan           #+#    #+#             */
/*   Updated: 2025/11/02 17:49:26 by amarjan          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_strjoin(char const *s1, char const *s2)
{
	size_t	length;
	size_t	alloc_size;
	char	*p;

	if (s1 == NULL || s2 == NULL)
		return (NULL);
	length = ft_strlen(s1) + ft_strlen(s2);
	alloc_size = length * sizeof(char) + 1;
	p = (char *)malloc(alloc_size);
	if (p == NULL)
		return (NULL);
	ft_strlcpy(p, s1, ft_strlen(s1) + 1);
	ft_strlcat(p, s2, alloc_size);
	return (p);
}