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  1.  
  2. #include <iostream>
  3. class Base {
  4. public:
  5.     virtual void who() {
  6.         std::cout << "Base\n";
  7.     }
  8. };
  9.  
  10. class FirstD: public Base {
  11. public:
  12.     void who() {
  13.         std::cout << "First derivation\n";
  14.     }
  15. };
  16.  
  17. class SecondD: public Base {
  18.     // who() не визначена
  19. };
  20.  
  21. int main() {
  22.     Base baseObj;
  23.     Base *p;
  24.     FirstD firstObj;
  25.     SecondD secondObj;
  26.  
  27.     p = &baseObj;
  28.     p->who(); // доступ до who класу Base
  29.     p = &firstObj;
  30.     p->who(); // доступ до who класу FirstD
  31.     p = &secondObj;
  32.     p->who(); /* доступ до who() класу Base, оскільки SecondD не перевизначає */
  33.     return 0;
  34. }
Success #stdin #stdout 0s 5320KB
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Base
First derivation
Base
https://ideone.com/W3X8aX
language:
C++ (gcc 8.3)
created:
2 hours ago
visibility:
public

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