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  1. #include <iostream>
  2. #include <chrono>
  3. #include <memory>
  4.  
  5. using namespace std;
  6. using namespace std::chrono;
  7.  
  8. enum class TYPE {base, child};
  9.  
  10. class Base {
  11. 	int n;
  12.   protected: Base(int _n) : n(_n) {}
  13.   public: virtual TYPE getType(){ return TYPE::base; }
  14. };
  15.  
  16. class Child: public Base {
  17. 	int m;
  18.   public:
  19.     TYPE getType(){ return TYPE::child; }
  20.     Child(int _n, int _m) : Base(_n), m(_m) {}
  21. };
  22.  
  23. int main() {
  24. 	unique_ptr<Base> b = make_unique<Child>(6, 7);
  25. 	TYPE tB = TYPE::base;
  26. 	TYPE tC = TYPE::child;
  27.  
  28. 	{
  29. 		auto t1 = high_resolution_clock::now();
  30. 		std::cout << (tB == b->Base::getType()) << ", ";
  31. 		auto t2 = high_resolution_clock::now();
  32. 		auto duration = duration_cast<microseconds>( t2 - t1 ).count();
  33. 		cout << "Duration: " << duration << std::endl;
  34.  
  35. 	}
  36.  
  37. 	{
  38. 		auto t1 = high_resolution_clock::now();
  39. 		std::cout << (tC == b->getType()) << ", ";
  40. 		auto t2 = high_resolution_clock::now();
  41. 		auto duration = duration_cast<microseconds>( t2 - t1 ).count();
  42. 		cout << "Duration: " << duration << std::endl;
  43.  
  44. 	}
  45.  
  46. 	return 0;
  47. }
Success #stdin #stdout 0s 3468KB
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1, Duration: 20
1, Duration: 1
https://ideone.com/c3TE9U
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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