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  1. #include <iostream>
  2. #include <functional>
  3.  
  4. using CallbackType = std::function<void()>;
  5.  
  6. class Car {
  7.   public:
  8.     void car_run(void);
  9.     void car_stop(void);
  10.  
  11.     CallbackType f1;
  12.  
  13. private:
  14.   CallbackType callbackHandler;
  15. };
  16.  
  17. void Car::car_run(void)
  18. {
  19.     std::cout<<"Car running"<<std::endl;
  20. }
  21.  
  22. void Car::car_stop(void)
  23. {
  24.     std::cout<<"Car stopping"<<std::endl;
  25. }
  26.  
  27. class Boat {
  28.   public:
  29.     Boat(Car& car_itf);
  30.     static void boat_run(void);
  31.     static void boat_stop(void);
  32.  private:
  33.     Car& car_itf_;
  34. };
  35.  
  36. Boat::Boat(Car& car_itf):car_itf_{car_itf}{
  37.     car_itf_.f1 = std::bind(&Boat::boat_run);
  38. }
  39.  
  40. void Boat::boat_run(void)
  41. {
  42.     std::cout<<"Boat running"<<std::endl;
  43. }
  44.  
  45. void Boat::boat_stop(void)
  46. {
  47.     std::cout<<"Boat running"<<std::endl;
  48. }
  49.  
  50. int main()
  51. {
  52.     Car bmw;
  53.     Boat ferry(bmw);
  54.     bmw.car_run();
  55.     bmw.f1();
  56.  
  57.     return 0;
  58. }
Success #stdin #stdout 0.01s 5512KB
comments ()
stdin 
Standard input is empty
stdout 
Car running
Boat running
https://ideone.com/cgmsbu
language:
C++ 4.3.2 (gcc-4.3.2)
created:
3 years ago
visibility:
public

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