间接访问权限（基类派生类）(67)

class Baseclass
{
public:
	Baseclass() {
	}
	~Baseclass(){};
	
	virtual void  (int a) const {
		cout << "asdf" << endl;
	}
};
class Driverclass : public Baseclass
{
public:
	Driverclass(){}
	~Driverclass(){}
private:
	void (int a) const {
		cout << "qwe" << endl;
	}
};
void main() {
	Baseclass* pb;
	Baseclass*  p = new Baseclass;
	Driverclass* d = new Driverclass;
	pb = p;
	pb->demo(2);
	pb = d;
	pb->demo(2);
	system("pause");
}