text: #ifndef DEF_LEK
  #define DEF_LEK
  
  #include "../dinstring.hpp"
  #include "artikal.hpp"
  #include <iostream>
  
  class Lek : public Artikal{
      private:
          long jkl;
          DinString naziv;
          double jedinicnaCena;
          int kolicina;
      public:
          Lek(): jkl(0), naziv(""), jedinicnaCena(0), kolicina(0) {}
          Lek(long jkl1, const char naziv1[], double jedinicnaCena1, int kolicina1): jkl(jkl1), naziv(naziv1), jedinicnaCena(jedinicnaCena1), kolicina(kolicina1) {}
          Lek(long jkl1, DinString& naziv1, double jedinicnaCena1, int kolicina1): jkl(jkl1), naziv(naziv1), jedinicnaCena(jedinicnaCena1), kolicina(kolicina1) {}
          Lek(const Lek& lek) : jkl(lek.jkl), naziv(lek.naziv), jedinicnaCena(lek.jedinicnaCena), kolicina(lek.kolicina) {}
  
  
          double getVrednost() const {return kolicina * jedinicnaCena;}
  
          friend ostream& operator<< (ostream& out, const Lek& lek){
              out << "Jedinstveni kod leka:"<< lek.jkl<<endl;
              out << "Naziv:" << lek.naziv << endl;
              out << "Jedinicna cena: " << lek.jedinicnaCena << endl;
              out << "Kolicina:" << lek.kolicina << endl;
              return out;
          }
  
  };
  #endif
  