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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. class B
  6. {
  7. public:
  8.     virtual void f() const { cout << "B\n"; }
  9.     virtual ~B() { cout << "~B\n"; }
  10. };
  11.  
  12. class C: public B
  13. {
  14. public:
  15.     void f() const { cout << "C\n"; }
  16.     ~C() { cout << "~C\n"; }
  17. };
  18.  
  19. class D: public C
  20. {
  21. public:
  22.     void f() const { cout << "D\n"; }
  23.     ~D() { cout << "~D\n"; }
  24. };
  25.  
  26. int main()
  27. {
  28.     B*b = new D;
  29.     b->f();
  30.     delete b;
  31. }
  32.  
Success #stdin #stdout 0s 15240KB
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stdin
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Standard input is empty
stdout
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D
~D
~C
~B
https://ideone.com/mqG4NW
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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