#include <cstdlib>
#include <iostream>
using namespace std;


class Kwadrat
{
  public:
    Kwadrat();
    Kwadrat( double b );

    double pole()
    {
      return bok * bok;
    }

    void ustawBok( double );
    double pobierzBok()
    {
      return bok;
    }
  private:
    double bok;
};


class Ostroslup : public Kwadrat
{
  public:
    Ostroslup() : Kwadrat(), H( 0 )
    {
    }

    Ostroslup( double bok, double h ) : Kwadrat( bok ), H( h )
    {
    }
  private:
    double H;
};
class Szescian : public Kwadrat
{
  public:

    Szescian( double b ) : Kwadrat( b )
    {
    }

    Szescian() : Kwadrat()
    {
    }

    double pole()
    {
      return 6 * Kwadrat::pole();
    }

};

Kwadrat::Kwadrat() : bok( 0 )
{
}

Kwadrat::Kwadrat( double b ) : bok( 0 )
{
  ustawBok( b );
}



void Kwadrat::ustawBok( double b )
{
  if( b >= 0 )
    bok = b;
}



class Program
{
  public:
    Program();
    void run();
    ~Program();

  private:
    void showMenu();
    void kwadrat();
    void kolo();
    void prostokat();
    void trojkat();
};

Program::Program()
{
  cout << "\nWitaj w programie \"PolaFigur\"";
}

void Program::showMenu()
{
   cout << "\n1. Pole kwadratu\n2. Pole kola\n3. Pole prostokata\n4. Pole trojkata\n>> ";
}

void Program::kwadrat()
{
  double bok;
  cout << "\nPodaj bok szescianu: ";
  cin >> bok;

  Szescian s;
  s.ustawBok( bok );
  cout << "Pole szescianu to: " << s.pole();
}

void Program::kolo()
{
}

void Program::prostokat()
{
}

void Program::trojkat()
{
}

void Program::run()
{
  char key;
  do
  {
     showMenu();
     cin >> key;
     switch( key )
     {
       case '1' : kwadrat();
                  break;
       case '2' : kolo();
                  break;
       case '3' : prostokat();
                  break;
       case '4' : trojkat();
                  break;
     }
  }
  while( key != '0' );
}

Program::~Program()
{
  cout << "\nDo widzenia, nacisnij Enter by zakonczyc program";
  cin.ignore();
  cin.get();
}

int main()
{
  Program prog;

  prog.run();

  return EXIT_SUCCESS;
}