adapter.cpp

#include <memory>

class Lion {
 public:
  virtual void roar(void) = 0;
};

class AfricanLion : public Lion {
 public:
  void roar(void) override {}
};

class AsianLion : public Lion {
 public:
  void roar(void) override {}
};

class Hunter {
 public:
  void hunt(Lion &lion) { lion.roar(); }
};

class WildDog {
 public:
  void bark(void) {}
};

class WildDogAdapter : public Lion {
 private:
  std::shared_ptr<WildDog> m_Dog;

 public:
  WildDogAdapter(const std::shared_ptr<WildDog> &dog) : m_Dog(dog) {}

  void roar(void) override { m_Dog->bark(); }
};

int main(void) {
  auto wildDog = std::make_shared<WildDog>();
  auto wildDogAdapter = WildDogAdapter(wildDog);

  Hunter hunter = Hunter();
  hunter.hunt(wildDogAdapter);
}