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  1. /*****************************************************************
  2. Name : 
  3. Date : 2017/05/12
  4. By   : CharlotteHonG
  5. Final: 2017/05/12
  6. *****************************************************************/
  7. #include <iostream>
  8. using namespace std;
  9.  
  10. template <class T> 
  11. struct Base{
  12.     Base(int i=0): num(i){}
  13.     void interface(){
  14.         static_cast<T*>(this)->implementation();
  15.     }
  16.     // static void static_func(){
  17.     //     T::static_sub_func();
  18.     // }
  19.     int num;
  20. };
  21.  
  22. struct Derived : Base<Derived>{
  23.     Derived(int i=0):Base<Derived>(i){}
  24.     void implementation(){
  25.         cout << "num=" << num << endl;
  26.     }
  27.     // static void static_sub_func();
  28. };
  29.  
  30. int main(int argc, char const *argv[]){
  31.     Base<Derived>* p = new Derived(10);
  32.     p->interface();
  33.     return 0;
  34. }
Success #stdin #stdout 0s 15224KB
comments (?)
stdin 
Standard input is empty
stdout 
num=10
https://ideone.com/ocRq3h
CRTP
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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