#include <iostream>
#include <iomanip>
#include <cstdlib>

#include "date0.h"
#include "date3.h"
#include "date1.h"
using namespace std;

void f(const date0 *p);

int main()
{
	date1 d1 {12, 25, 2025};   //There is a date0 inside of a date1.
	date3 d3 {12, 25, 2025};   //There is a date0 inside of a date3.
	//date0 d0 {12, 25, 2025}; //can't have a date0 object any more
	
	f(&d1);
	f(&d3);

	return EXIT_SUCCESS;
}

void f(const date0 *p)  //but can still have a pointer to a date0 object
{
	cout << *p << "\n";
}