kopira x1 i x2 u x3

#include <iostream>
#include <string>

using namespace std;

int main ()
{
	string x1, x2, x3;
	cin >> x1;
	cin >> x2;

	for (int i=0; i<x1.length(); i++)
	{
		x3[i] = x1[i];
		cout << x3[i];
	}

	cout << " ";

	for (int i=0; i<x2.length(); i++)
	{
		x3[i] = x2[i];
		cout << x3[i];
	}

	return 0;



}