#include <iostream >
using namespace std;

class Base1
{
public:
	void Show() { cout << "call Base1::Show()" <<endl;}
};
class Base2
{
public:
	void Show() { cout << "call Base2::Show()" <<endl;}
};

//類Derived ，同時繼承類Base1和類Base2
class Derived : public Base1, public Base2
{
	int m_x, m_y;
public:
	void set(int x, int y ) 
	{ 
		m_x = x;
		m_y = y;
	}
};

int main()
{
	Derived ob_d;
	ob_d.set(1,2);
	ob_d.Show();		// error!

	return 0;
}