#include <iostream>
class B {
public:
void print(std::string const& text) {
std::cout << text << std::endl;
}
virtual void method() {print("B::method");}
};
class D : public B {
public:
virtual void method() override {print("D::method");}
};
int main() {
B* pb = new B;
B* pd = new D;
pb -> method();
pd -> method();
}