problem with ostream operator

[fyodor]

Hello! that's my program:
.cpp

Tablica::Tablica(int rozmiar)
{
     if (rozmiar<0) ;
     if (rozmiar==0) ;
     if (rozmiar<10) ;
     if (rozmiar>1000) ;
     
     bufor=new int[rozmiar];
}

Tablica::~Tablica()
{
     delete []bufor;
}

Tablica& Tablica::operator=(const Tablica &tab)
{
     if(this==&tab) return *this;
     rozmiar=tab.PobierzRozmiar();
     delete [] bufor;
     bufor=new int[rozmiar];
     for (int i=0; i<rozmiar; i++)
     {
         bufor[i]=tab.bufor[i];
     }
     return *this;
} 
                  
int& Tablica::operator[](int indeks)
{
     int rozmiar = PobierzRozmiar();
     if(indeks>=0 && indeks<PobierzRozmiar()) return bufor[indeks];
     //throw A();
}

ostream& operator<<(ostream& out, const Tablica &tab)
{
         for (int i =0; i<(tab.PobierzRozmiar()); i++)
         {
         out<< "[" << i<< "] "<<tab.bufor[i]<<endl;
         }
         return out;
}  

.h:

#include <iostream>
using namespace std;

class Tablica
{
      private:
              int *bufor;
              int rozmiar;
      public:
             Tablica(int rozmiar);
             ~Tablica();
             int PobierzRozmiar() const {return rozmiar;}
             Tablica &operator=(const Tablica&);
             int& operator[](int indeks);
             friend ostream& operator<<(ostream&, const Tablica&);
};

main:

#include <cstdlib>
#include <iostream>
#include <conio.h>
#include "xyz.h"
using namespace std;

int main()
{
    Tablica new_tab(5);
    cout<<new_tab;
    
    
    getch();
    return 0;
}

when i'm compiling this program it's displaying not 5 but 2700 positions and then error appears...i don't know what is wrong in definition of << operator..can somebody help?

sorry for english...

[kbw]

In your constructor Tablica::Tablica(int rozmiar), you never initialise member variable rozmiar