gistfile1.cpp

class Gate {
protected:
  Out outputs[];
public:
	virtual void propagate();
};

void Gate::propagate() {
	int noutputs = sizeof(this->outputs)/sizeof(*(this->outputs));
	cout << noutputs << " outputs.";
	for( int i = 0; i < noutputs; i++ ) {
		cout << i << endl;
	}
}

class And: public Gate {
private:
	In	inputs[2];
	Out	outputs[1];
public:
	void in(int, bool);
	bool out();
};