#include <iostream>
class Foo
{
	public:
	Foo(int i) { cout << "foo-ctor: " <<  i << endl;  _i = i; }
	~Foo()     { cout << "foo-dtor: " << _i << endl; }
	int operator==(Foo & other){ return 0; }
	private:
	int _i;
};

void f()
{
	Foo f1=7;
	// '3' will or will not be turned into a temporary Foo object
	//bool b = ( 1 && f1==3 ); // temp object c'tor + d'tor
	bool b = ( 0 && f1==3 );   // temp object d'tor only!
}