#include "libvector.h"
#include <cstdio>
#include <cstdlib>
#include <string>
#include <vector>
#include <iostream>

using namespace std;
int main()
{
     cout << "Hallo world\n";
     vector2d a(2,3);
     vector2d b(4,5);
     cout << "a="; a.print();
     cout << "b="; b.print();
     cout << "a+b="; (a+b).print();
     

}