sara.cpp

#include <iostream>
#include <typeinfo>


struct Game;

struct Command
{
    void execute(Game& game);
};


struct Game
{
    Command cmd;

    virtual void run() {
        cmd.execute(*this);
    }
};

struct Chess : public Game
{

};

void Command::execute(Game &game) {
    try {
        Chess &chess = dynamic_cast<Chess&>(game);
        std::cout << "Chess Objekt" << std::endl;
    } catch (std::bad_cast &ex) {
        std::cout << "Kein Chess Objekt" << std::endl;
    }
}

int main() {
    Game *game = new Game();
    game->run(); // Ausgabe: Kein Chess Objekt

    std::cout << "aber:" << std::endl;

    Chess *chess = new Chess();
    chess->run(); // Ausgabe: Chess Objekt

    std::cout << "bzw.:" << std::endl;
    Game *game2 = new Chess();
    game2->run(); // Ausgabe: Chess Objekt
}