fork(1) download
copy 
  1. #include <iostream>
  2. #include <typeinfo>
  3. using namespace std;
  4.  
  5. class A
  6. {
  7. public:
  8.     virtual void fV() { }
  9. };
  10. class B : public A
  11. {
  12. public:
  13.     void mB() { }
  14. };
  15. class C : public A
  16. {
  17. public:
  18.     void mC() { }
  19. };
  20.  
  21. int main() {
  22. 	A *array[4] = { new A, new C, new C, new B }; // first changed to raw A
  23. 	cout << "i  A B C\n--------"<<endl; 
  24. 	for(int i = 0; i < 4; ++i) {
  25.     	cout << i + 1 << ". " ;
  26.     	(typeid(*array[i]) == typeid(A)) ? cout << 1 << ' ': cout << 0 << ' ';
  27.     	(typeid(*array[i]) == typeid(B)) ? cout << 1 << ' ': cout << 0 << ' ';
  28.     	(typeid(*array[i]) == typeid(C)) ? cout << 1 << ' ': cout << 0 << ' ';
  29.     	cout << endl;
  30. 	}
  31. 	return 0;
  32. }
Success #stdin #stdout 0s 3468KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
i  A B C
--------
1. 1 0 0 
2. 0 0 1 
3. 0 0 1 
4. 0 1 0
https://ideone.com/MZLmzb
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!