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Jun 22nd, 2017
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  1. #include <iostream>
  2. #include <vector>
  3. #include <algorithm>
  4. using namespace std;
  5.  
  6. class Unikalna{
  7. const unsigned int id;
  8. static unsigned int counter;
  9. public:
  10. Unikalna(int xd) : id(xd){
  11. counter++;
  12. }
  13. ~Unikalna(){
  14. counter--;
  15. }
  16. static int ile(){
  17. return counter;
  18. }
  19. };
  20.  
  21. unsigned int Unikalna::counter=0;
  22.  
  23. int main()
  24. {
  25. Unikalna karyna(5);
  26. Unikalna martyna(6);
  27. Unikalna agnieszka(7);
  28.  
  29. cout << Unikalna::ile()<<endl;
  30.  
  31. return 0;
  32. }
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