#include<iostream> 
using namespace std; 
class Shape {
  
  protected:
    int l, b, h;
    double r, h1; 
 
  public:
   
    virtual double volume() = 0; 
};

class Box : public Shape {
 
  public:
   
    Box(int l, int b, int h) {
      this->l = l;
      this->b = b;
      this->h = h;
    }
   
    double volume() {
      return (l * b * h);
    }
};

class Cylinder : public Shape {
  
  public:

    Cylinder(double r, double h1) {
      this->r = r;
      this->h1 = h1;
    }
    double volume() {
      return (3.14 * r * r * h1);
    }
};

int main() {
  Shape *box, *cylinder;
  box = new Box(9, 4, 6); 
  cylinder = new Cylinder(10.2, 5.5); 
  cout << "Volume of Box :" << box->volume() << endl; 
  cout << "Volume of Cylinder :" << cylinder->volume() << endl; 
  
  delete box;
  delete cylinder;
  return 0;
}