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  1. #include <iostream>
  2. using namespace std;
  3.  
  4.  
  5. struct B {
  6. 	void f(int && a){
  7. 		cout << "B::f(int&&)  "; }
  8. 	virtual int f() const {
  9. 		cout << "B::f() "; return 0;}
  10. };
  11. struct D : B {
  12. 	virtual void f(int a){
  13. 		cout << "D::f(int)  "; }
  14. 	virtual int f()const  {
  15. 		cout << "D::f() "; return 0;}
  16. };
  17. struct C : D {
  18. 	void f(int a)  {
  19. 		cout << "C::f(int)  "; }
  20. 	int f() const  {
  21. 		cout << "C::f() ";  return 0;
  22. 	}
  23. };
  24.  
  25. int main() {
  26.         C c;
  27. 	  D d;
  28. 	  B * p = &d;
  29. 	  D * q = &c;
  30. 	  q -> f(1);
  31. 	  q -> f();
  32. 	  p -> f(2);
  33. 	  p -> f();
  34.         return 0;
  35.    }
  36.  
Success #stdin #stdout 0s 5288KB
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Standard input is empty
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C::f(int)  C::f() B::f(int&&)  D::f()
https://ideone.com/AahNTK
language:
C++14 (gcc 8.3)
created:
22 hours ago
visibility:
public

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