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- //Klasy Abstrakcyjne
- #include <iostream>
- using namespace std;
- class Figura{
- public:
- virtual void Pole()=0;
- virtual int Obwod()=0;
- };
- class Kwadrat : public Figura{
- public:
- int dlugosc;
- Kwadrat(int dl){
- dlugosc=dl;
- }
- void Pole(){
- cout<<dlugosc*dlugosc<<"\n";
- }
- int Obwod(){
- return 4*dlugosc;
- }
- };
- int main (){
- Kwadrat k(7);
- Figura *wsk;
- wsk=&k;
- wsk->Pole();
- cout<<wsk->Obwod();
- }
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