#include <iostream>

using namespace std;

class Foo {
public:
  int i;

  Foo() {
    i = -1;
  }

  Foo( const Foo& f) {
    i = f.i;
  }

  Foo( double x) {
    i = (int)x;
  }

};

int main() {
  const Foo& f = Foo();

  // this won't compile
  //const Foo& g = Foo;

  cout << f.i << endl;

  return -1;
}