#include <iostream>
#include <cstdlib>
#include "grandchild.h"
using namespace std;

int main()
{
	base       b(10);
	middle     m(10, 20);
	grandchild g(10, 20, 30);

	const base *const a[] = {&b, &m, &g, 0};
	const size_t n = sizeof a / sizeof a[0];

	for (size_t i = 0; i < n; ++i) {
		cout << "a[" << i << "]: ";
		if (a[i] == 0) {
			cout << "zero pointer";
		} else {
			cout << *a[i] << " ";
		}

		const middle *const p = dynamic_cast<const middle *>(a[i]);
		if (p) {
			p->newfunc();
		}

		cout << "\n";
	}

	return EXIT_SUCCESS;
}