// Example of a simple fiend function

#include <iostream>
using namespace std;

class Example{
  private:
	int hidden;
  public:
       Example(){ hidden =0; }
       void up(){ hidden++;}
       int get(){ return hidden; }

       friend void spy(Example e) { cout << e.hidden; }

	void print(){ cout << hidden; }

};

int main()
{
	Example example;

	cout << example.get() << endl;

	example.print();  cout << endl;

	spy(example); cout << endl;

	cout << example.hidden << endl;

}