#include<iostream>
using namespace std;
class Vehicle
{
 public:
  virtual void ApplyBreaks()
  {
     cout<<"Vehicle Break"<<endl;
  }
  virtual void ApplyHorns()
  {
    cout<<"Vehicle Horns"<<endl;
  }
};

class Truck: public Vehicle
{
 public:
  void ApplyBreaks()
  {
    cout<<"Truck Break"<<endl;
  }
};

class Car:public Vehicle
{
 public:
  void ApplyHorns()
  {
    cout<<"Car Horns"<<endl;
  }
};

/* https://www.hackerearth.com/practice/notes/virtual-function-and-virtual-table-in-c/ */

int main()
{
  Truck t;
  Car c;
  Vehicle * v1 = &t;
  Vehicle * v2 = &c;
  v1->ApplyBreaks();  cout << '\n';  v2->ApplyHorns();
}