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  1. #include <iostream>
  2.  
  3. struct Bird {
  4. 	virtual void sing() { std::cout << "tweet, tweet\n"; }
  5. };
  6.  
  7. struct Sparrow : Bird {
  8. 	void sing() { std::cout << "chirp, chirp\n"; }
  9. };
  10.  
  11. int main() {
  12. 	Sparrow sparrow;
  13. 	Bird& bird = sparrow;
  14. 	bird.sing();
  15. 	return 0;
  16. }
Success #stdin #stdout 0s 4432KB
comments (?)
stdin 
Standard input is empty
stdout 
chirp, chirp
https://ideone.com/yW43Tq
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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