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  1. #include <iostream>
  2. #include <typeinfo>
  3.  
  4. class A {
  5. public:
  6. 	virtual ~A() {}
  7. };
  8.  
  9. class B: public A {};
  10. class C: public A {};
  11.  
  12.  
  13. int main() {
  14. 	const A& a = C{};
  15.  
  16. 	const auto& id = typeid(a);
  17.  
  18. 	if(id == typeid(B)) {
  19. 		std::cout << "Got a B." << std::endl;
  20. 	}
  21. 	else if(id == typeid(C)) {
  22. 		std::cout << "It's a C!" << std::endl;
  23. 	}
  24.  
  25. 	return 0;
  26. }
Success #stdin #stdout 0s 5316KB
comments (?)
stdin 
Standard input is empty
stdout 
It's a C!
https://ideone.com/DiodyE
language:
C++14 (gcc 8.3)
created:
7 days ago
visibility:
public

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