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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. struct B {
  5. 	void f(std::string && a){cout<<"B::f(string &&)"; }
  6. 	virtual int f() const {
  7. 		cout << "B::f()  ";  return 0; }
  8. };
  9. struct D : B {
  10. virtual	void f(std::string a){ cout << "D::f(string) "; }
  11. 	int f() const { cout << "D::f() "; return 0; }
  12. };
  13. struct C : D {
  14. 	void f(std::string a) override{
  15. 		cout << "C::f(string)  "; }
  16. 	int f() const override {
  17. 		cout << "C::f() ";  return 0; }
  18. };
  19.  
  20.  
  21. int main() {
  22.      C c;
  23.      D d;
  24.      B * p = &d;
  25.      D * q = &c;
  26.      q -> f("1");
  27.      q -> f();
  28.      p -> f("2");
  29.      p -> f();
  30.      return 0;
  31. }
  32.  
Success #stdin #stdout 0s 5308KB
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Standard input is empty
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C::f(string)  C::f() B::f(string &&)D::f()
https://ideone.com/DZvfVz
language:
C++14 (gcc 8.3)
created:
4 hours ago
visibility:
public

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