C / C++ / MFC

int Hours;<br />
int Minutes;<br />
int Seconds;

/*
output
constructor B1
constructor B2
constructor D2
constructor D1
constructor D3
*/

#include <iostream>

using namespace std;

class B1 {
public:
	 B1()
	 {
		 cout << "constructor B1 " << endl;
	 }
};

class B2 {
public:
	 B2()
	 {
		 cout << "constructor B2 " << endl;
	 }
};

class D1 : virtual public B1 {
public:
	 D1()
	 {
		 cout << "constructor D1 " << endl;
	 }
};

class D2 : public virtual B1, public B2 {
public:
	 D2()
	 {
		 cout << "constructor D2 " << endl;
	 }
};

class D3 : public D1, virtual public D2 {
public:
	 D3()
	 {
		 cout << "constructor D3 " << endl;
	 }
};

int main()
{
	D3 d;
	return 0;
}