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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. class Car
  5. {
  6. public:
  7.    virtual ~Car() {};
  8.  
  9.    virtual void drive() {};
  10. };
  11.  
  12.  
  13. class Porsche : public Car
  14. {
  15. public:
  16.    virtual void drive()
  17.    {
  18.       std::cout << "Porsche just drives but not fast!" << std::endl;
  19.    };
  20.  
  21.    void driveFast()
  22.    {
  23.       std::cout << "Porsche drives fast!" << std::endl;
  24.    };
  25. };
  26.  
  27.  
  28. class Ford : public Car
  29. {
  30. public:
  31.    virtual void drive()
  32.    {
  33.       std::cout << "Ford just drives but not fast!" << std::endl;
  34.    };
  35. };
  36.  
  37. int main () {
  38.  
  39.    std::vector<Car *> cars;
  40.    cars.push_back(new Porsche()); /* implicit up-cast */
  41.    cars.push_back(new Ford());    /* implicit up-cast */
  42.  
  43.    Car *     porscheAsCar = cars.at(0);
  44.    Porsche * porsche      = dynamic_cast<Porsche *>(cars.at(0));
  45.  
  46.    porscheAsCar->drive();
  47.    porsche->drive();
  48.    porsche->driveFast();
  49.  
  50.    delete cars.at(0);
  51.    delete cars.at(1);
  52.  
  53.    return 0;
  54. }
  55.  
Success #stdin #stdout 0s 16064KB
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Porsche just drives but not fast!
Porsche just drives but not fast!
Porsche drives fast!
https://ideone.com/5Pp097
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
public

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