ft_strjoin.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strjoin.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: anpayot <anpayot@student.42lausanne.ch>    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/10/17 03:13:57 by anpayot           #+#    #+#             */
/*   Updated: 2024/10/17 03:15:21 by anpayot          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_strjoin(char const *s1, char const *s2)
{
	char	*joined_str;
	char	*ptr;
	size_t	s1_len;
	size_t	s2_len;

	if (!s1 || !s2)
		return (NULL);
	s1_len = ft_strlen(s1);
	s2_len = ft_strlen(s2);
	joined_str = (char *)malloc(sizeof(char) * (s1_len + s2_len + 1));
	if (!joined_str)
		return (NULL);
	ptr = joined_str;
	while (*s1)
		*ptr++ = *s1++;
	while (*s2)
		*ptr++ = *s2++;
	*ptr = '\0';
	return (joined_str);
}