#include <iostream>
using namespace std;
 
struct A { virtual ~A() {} };
struct B : public A { void put(int n) { cout << n << endl; } };
struct C : public A { void put(float f) { cout << f << endl; } };
 
int main() {
	A *objects[2];
	objects[0] = new B;
	objects[1] = new C;
	for (A *a : objects) {
		if (auto *b = dynamic_cast<B*>(a)) {
			b->put(10);
		}
		else if (auto *c = dynamic_cast<C*>(a)) {
			c->put(3.14);
		}
	}
	for (A *a : objects) {
		delete a;
	}
	return 0;
}

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