ft_strjoin.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strjoin.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: pmaryjo <pmaryjo@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/09/05 18:41:56 by pmaryjo           #+#    #+#             */
/*   Updated: 2021/09/05 18:41:57 by pmaryjo          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_strjoin(char const *s1, char const *s2)
{
	int		counter;
	char	*result;
	size_t	s1_size;
	size_t	s2_size;

	if (!s1 || !s2)
		return (NULL);
	s1_size = ft_strlen(s1);
	s2_size = ft_strlen(s2);
	result = (char *)malloc(s1_size + s2_size + 1);
	if (!result)
	{
		return (NULL);
	}
	counter = 0;
	while (*s1)
	{
		result[counter++] = *s1++;
	}
	while (*s2)
	{
		result[counter++] = *s2++;
	}
	result[counter] = '\0';
	return (result);
}