int main() {
using duck_ptr = std::unique_ptr<Duck>;
std::vector<duck_ptr> ducks;
ducks.push_back(std::make_unique<MallardDuck>());
ducks.push_back(std::make_unique<RedheadDuck>());
ducks.push_back(std::make_unique<RubberDuck>());
ducks.push_back(std::make_unique<DecoyDuck>());
for(auto& ptr : ducks) {
ptr->display();
ptr->swim();
ptr->performQuack();
ptr->performFly();
std::cout << '\n';
}
ModelDuck model;
model.display();
std::cout << "first try to fly\n";
model.performFly();
std::cout << "second <better> try\n";
model.setFlyBehavior(FlyRocketPowered{});
model.performFly();
return 0;
}
// duck simulation!
int main() {
// auto_ptr is deprecated!
typedef std::auto_ptr<Duck> duck_ptr;
duck_ptr ducks[] = {
duck_ptr(new MallardDuck),
duck_ptr(new RedheadDuck),
duck_ptr(new RubberDuck),
duck_ptr(new DecoyDuck)
};
const size_t LENGTH = sizeof(ducks) / sizeof(duck_ptr);
for(size_t i = 0; i < LENGTH; ++i) {
ducks[i]->display();
ducks[i]->swim();
ducks[i]->performQuack();
ducks[i]->performFly();
std::cout << '\n';
}
ModelDuck model;
model.display();
std::cout << "first try to fly\n";
model.performFly();
std::cout << "second <better> try\n";
FlyWithRocketFactory flyWithRocketFactory;
model.setFlyBehavior(flyWithRocketFactory);
model.performFly();
return 0;
}