fork(2) download
copy 
  1. #include<iostream>
  2. #include<typeinfo>
  3. #include<cxxabi.h>
  4. using namespace std;
  5.  
  6. template<typename T>
  7. const char* realname (T &obj) 
  8. {
  9.   return abi::__cxa_demangle(typeid(obj).name(), 0, 0, 0);
  10. }
  11.  
  12.  
  13. template<typename T>
  14. struct ActualType { typedef T type; };
  15. template<typename T>
  16. struct ActualType<T*> { typedef typename ActualType<T>::type type; };
  17.  
  18. template<class Pointer>
  19. struct A
  20. {
  21.   typename ActualType<Pointer>::type obj;
  22.  
  23.   void print ()
  24.   {
  25.     cout << "realname(obj) = " << realname(obj) << endl;
  26.   }
  27. };
  28.  
  29. int main ()
  30. {
  31.   A<int> a1;
  32.   A<int*> a2;
  33.   A<int**> a3;
  34.  
  35.   a1.print();
  36.   a2.print();
  37.   a3.print();
  38. }
  39.  
Success #stdin #stdout 0.01s 2812KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
realname(obj) = int
realname(obj) = int
realname(obj) = int
https://ideone.com/vIQTeV
language:
C++ (gcc 8.3)
created:
11 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!