/* class_adapter.cpp
 *
 * Adapter objects get their functionality through inheritance
 * from class Target
 */

#include <iostream>
#include <vector>

class Interface {

public:
  virtual void request() = 0;
};

class Target {

public:
  virtual void specificRequest() { std::cout << "Using specific request\n"; }
};

class Adapter: public Interface, private Target {

public:
  virtual void request(){ specificRequest(); }
};

class Client {

public:
  Client(Interface* interface) : _interface(interface) {}

  void do_something() { _interface->request(); }

private:
  Interface* _interface;
};

int main() {

  Adapter a;

  Client client(&a);

  client.do_something();
}