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  1. #include <iostream>
  2. #include <string>
  3. using namespace std;
  4.  
  5. class osoba{
  6. protected:
  7.     string* imie;
  8.     string nazwisko;
  9. public:
  10.     osoba():imie(new string("brak ")),nazwisko("brak"){}
  11.     osoba(const string& a1,const string& a2):imie(new string(a1)),nazwisko(a2){}
  12.     osoba(const osoba& ob):imie(new string(*ob.imie)),nazwisko(ob.nazwisko){}
  13.     virtual ostream& wypisz(ostream& out){out << *imie << " " << nazwisko;}
  14.     friend ostream& operator<<(ostream& out,osoba& ob){out << ob.wypisz(out);}
  15.     virtual ~osoba(){delete imie;}
  16. };
  17. class student:public osoba{
  18.     string kierunek;
  19.     unsigned rok;
  20. public:
  21.     student():osoba(){}
  22.     student(const osoba& ob):osoba(ob){}
  23.     student(const osoba& ob,const string& a1,const unsigned& a2):osoba(ob),kierunek(a1),rok(a2){}
  24.     ostream& wypisz(ostream& out){out << *imie << " " << nazwisko << " " << kierunek << " " << rok << endl;}
  25. };
  26. //osoba::ktory = 0;
  27. int main()
  28. {
  29.     const osoba o1("Jan", "Kowalski");
  30.     const osoba o2("Ewa", "Nowak");
  31.  
  32.     osoba* tab[5];
  33.  
  34.     tab[0] = new osoba;
  35.     tab[1] = new student;
  36.     tab[2] = new osoba("Ala", "Kot");
  37.     tab[3] = new student(o1);
  38.     tab[4] = new student(o2, "Informatyka",3);
  39.  
  40.     for(int i = 0; i < 5; i++)
  41.         try
  42.         {
  43.             cout << *tab[i] << endl;
  44.         }
  45.         catch (const string& err)
  46.         {
  47.             cerr << err << endl;
  48.         }
  49.  
  50.     cout << "**********" << endl;
  51.  
  52.     return 0;
  53. }
Runtime error #stdin #stdout 0s 3416KB
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Standard output is empty
https://ideone.com/qGA55X
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
secret

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