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  1. #include <iostream>
  2. class Base {
  3. public:
  4.     virtual void who() {
  5.         std::cout << "Base\n";
  6.     }
  7. };
  8.  
  9. class FirstD: public Base {
  10. public:
  11.     void who() {
  12.         std::cout << "First derivation\n";
  13.     }
  14. };
  15.  
  16. class SecondD: public Base {
  17.     // who() не визначена
  18. };
  19.  
  20. int main() {
  21.     Base baseObj;
  22.     Base *p;
  23.     FirstD firstObj;
  24.     SecondD secondObj;
  25.  
  26.     p = &baseObj;
  27.     p->who(); // доступ до who класу Base
  28.     p = &firstObj;
  29.     p->who(); // доступ до who класу FirstD
  30.     p = &secondObj;
  31.     p->who(); /* доступ до who() класу Base, оскільки SecondD не перевизначає */
  32.     return 0;
  33. }
  34.  
Success #stdin #stdout 0s 5288KB
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Standard input is empty
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Base
First derivation
Base
https://ideone.com/azGxeY
language:
C++14 (gcc 8.3)
created:
2 hours ago
visibility:
public

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