fork download 
  1. #include <iostream>
  2. #include <string>
  3.  
  4. template <typename C>
  5. class Super
  6. {
  7. public:
  8.     std::string GetFunnyName() const
  9.     {
  10.         C *thiz = static_cast<C *>(this);
  11.         return thiz->GetFunnyName();
  12.     }
  13. };
  14.  
  15. template <typename C>
  16. class A_base : public Super<C>
  17. {
  18. public:
  19.     std::string GetFunnyName() const
  20.     {
  21.         return "A";
  22.     }
  23. };
  24. class A : public A_base<A> { };
  25.  
  26. class B : public A_base<B>
  27. {
  28. public:
  29.     std::string GetFunnyName() const
  30.     {
  31.         return "B";
  32.     }
  33. };
  34.  
  35. template <typename TSuper>
  36. void OutputFunny(const TSuper &obj)
  37. {
  38.     std::cout << obj.GetFunnyName() << "\n";
  39. }
  40.  
  41. int main()
  42. {
  43.     A a;
  44.     B b;
  45.  
  46.     OutputFunny(a);
  47.     OutputFunny(b);
  48. }
Success #stdin #stdout 0s 3472KB
comments ()
stdin 
Standard input is empty
stdout 
A
B
https://ideone.com/LdAqMa
language:
C++14 (gcc 8.3)
created:
10 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!