ft_strjoin.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strjoin.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: abdsalah <abdsalah@student.42amman.com>    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/08/27 15:59:37 by abdsalah          #+#    #+#             */
/*   Updated: 2024/08/31 13:26:40 by abdsalah         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

static char	*ft_strcat(char *dest, const char *src)
{
	int	i;
	int	size;

	i = 0;
	size = ft_strlen(dest);
	while (src[i] != '\0')
	{
		dest[size + i] = src[i];
		i++;
	}
	dest[size + i] = '\0';
	return (dest);
}

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

	if (!s1 || !s2)
		return (NULL);
	total_len = ft_strlen(s1) + ft_strlen(s2) + 1;
	str = malloc(total_len * sizeof(char));
	if (!str)
		return (NULL);
	str[0] = '\0';
	ft_strcat(str, s1);
	ft_strcat(str, s2);
	return (str);
}