#include<iostream>
using namespace std;
class Weapon
{
  public:
    Weapon()
    {
       cout<<"Loading weapon features.\n";
    }
    void features()
    {
       cout<<"Loading weapon features.\n";
    }
};
class Bomb : public Weapon
{
  public:
    void features()
    {
      this->Weapon::features();
      cout<<"Loading bomb features.\n";
    }
};
class Gun : public Weapon
{
  public:
    void features()
    {
      this->Weapon::features();
      cout<<"Loading gun features.\n";
    }
};
class Loader
{
  public:
    void loadFeatures(Weapon *weapon)
    {
       weapon->features();
    }
};
int main()
{
  Loader *l = new Loader;
  Weapon *w;
  Bomb b;
  Gun g;
  w=&b;
  l->loadFeatures(w);
  w=&g;
  l->loadFeatures(w);
  return 0;
}