Code:

#include <iostream>
#include <cstdlib>
#include <string>

using namespace std;

//definisanje konstanti nabrajanja
typedef unsigned short int USHORT;
typedef unsigned long int ULONG;
enum BOOL {FALSE, TRUE};
enum IZBOR {DrawRect = 1, GetArea, GetPerim, ChangeDimension, Quit};

//Definicija klase Pravougaonik
class Pravougaonik
{
      private:
      USHORT sirina;
      USHORT visina;
      
      public:
       Pravougaonik(USHORT s, USHORT v): sirina(s),visina(v){}//konstruktor
      ~Pravougaonik(){}   //destruktor
      
      //metodi
      USHORT UzmiVisinu() const {return visina;}
      USHORT UzmiSirinu() const {return sirina;}
      ULONG  UzmiPovrsinu() const{return sirina*visina;}
      ULONG UzmiObim() const {return 2*visina + 2*sirina;}
      void SetSize(USHORT novaSirina,USHORT novaVisina ):sirina(novaSirina), visina(novaVisina)
      {}
      void CrtajOblik()   const;      
      
};// kraj definicije klase Pravougaonik

//Prototipi funkcija
USHORT DoMenu();
void DoDrawRect(Pravougaonik);
void DoGetArea(Pravougaonik);
void DoGerPerim(Pravougaonik);

//glavna funkcija main
int main()
{
    //Kreiranje instance
    Pravougaonik pravougaonik(30,5);
    
    USHORT izbor = DrawRect;
    USHORT quit = FALSE;
    
    while(!quit)
    {
                izbor = DoMenu();
                if(izbor < DrawRect || izbor > quit)
                {
                         cout<<"Neispravan izbor!!!Molimo vas pokusajte ponovo!!!"<<endl;
                         continue;
                }
                         switch(izbor)
                         {
                         case DrawRect:
                           DoDrawRect(pravougaonik); 
                           break;
                         case GetArea:
                           DoGetArea(pravougaonik);
                           break;
                         case GetPerim:
                           DoGetPerim(pravougaonik);
                           break;
                         case ChangeDimension:
                           USHORT novaSirina,novaVisina;
                           cout<<"Nova sirina> ";
                           cin >> novaSirina;
                           cout<<endl;
                           cout<<"Nova visina> ";
                           cin >> novaVisina;
                           pravougaonik.SetSize(novaSirina, novaVisina);
                           DoDrawRect(pravougaonik);
                           break;
                         case Quit:
                           quit = TRUE;
                           cout<<"Izlazak iz programa..."<<endl;
                           break;
                         case default:
                           cout<<"Greska u izboru!!!"<<endl;
                           quit = TRUE;
                           break;
                        }    // kraj izbora switch
    } // kraj while petlje
    
    
   
    system("PAUSE");
    return 0;
}   // kraj funkcije main