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  1. #include <iostream>
  2. #include <typeinfo>
  3. using namespace std;
  4.  
  5. struct A { virtual ~A() {}; virtual void foobar() {} };
  6. struct B : A { };
  7. struct C : A { };
  8. struct D : A { };
  9.  
  10. bool contains_type( A** arr, int ct, const type_info& a ) {
  11.     for ( int idx = 0; idx < ct; ++idx ) {
  12.     	if ( a == typeid(*arr[idx]) )
  13.     		return true;
  14.     }
  15.  
  16.     return false;
  17. }
  18.  
  19. int main() {
  20. 	B b;
  21. 	C c;
  22. 	D d;
  23.  
  24. 	const int ct = 2;
  25. 	A* arr[ct] = {&b, &c};
  26.  
  27. 	cout << contains_type(arr,ct,typeid(B)) << endl;
  28. 	cout << contains_type(arr,ct,typeid(C)) << endl;
  29. 	cout << contains_type(arr,ct,typeid(D)) << endl;
  30. 	return 0;
  31. }
Success #stdin #stdout 0s 3456KB
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https://ideone.com/aSxlk9
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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