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  1. #include <iostream>
  2.  
  3. struct Base
  4. {
  5. 	public:
  6. 		Base(int a) : _a(a) { }
  7.     protected:
  8.     int _a;
  9.     bool operator == ( const Base& other ) const
  10.     {
  11.         return (_a == other._a);
  12.     }
  13. };
  14.  
  15. struct Derived : public Base
  16. {
  17. 	Derived(int a) : Base(a) { }
  18.     bool operator == ( const Derived& other ) const
  19.     {
  20.     	return Base::operator==(other);
  21.         //return static_cast<Base>(*this) == static_cast<Base>(other);
  22.     }
  23. };
  24.  
  25. int main()
  26. {
  27.     Derived b1(0), b2(0), b3(5);
  28.     std::cout << std::boolalpha << (b1 == b2) << std::endl;
  29.     std::cout << (b1 == b3) << std::endl;
  30. }
Success #stdin #stdout 0s 15232KB
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https://ideone.com/8vjdF9
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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