Preventing Method Overrides, Using the final Keyword - C++ Class

C++ examples for Class:final

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Description

Preventing Method Overrides, Using the final Keyword

Demo Code

#include <cinttypes>
#include <iostream>

using namespace std;

class Vehicle//from w w w . ja  va 2s . c  o  m
{
public:
  Vehicle() = default;

  virtual int GetNumberOfWheels() const final
  {
    return 2;
  }
};

class Car : public Vehicle
{
public:
  Car() = default;

//  int GetNumberOfWheels() const override
//  {
  //  return 4;
  //}
};

class Motorcycle : public Vehicle
{
public:
  Motorcycle() = default;
};

int main(int argc, char* argv[])
{
  Vehicle* pVehicle{};

  Vehicle myVehicle{};
  pVehicle = &myVehicle;
  cout << "A vehicle has " << pVehicle->GetNumberOfWheels() << " wheels." << endl;

  Car myCar{};
  pVehicle = &myCar;
  cout << "A car has " << pVehicle->GetNumberOfWheels() << " wheels." << endl;

  Motorcycle myMotorcycle;
  pVehicle = &myMotorcycle;
  cout << "A motorcycle has " << pVehicle->GetNumberOfWheels() << " wheels." << endl;

  return 0;
}

Result


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