fork download
copy 
  1.  
  2. #include <iostream>
  3. using namespace std;
  4.  
  5. struct C;
  6. struct B;
  7.  
  8. class A{
  9.     public:
  10.     A(int r): type(r){}
  11.     int type;
  12.     void deleter();
  13.     protected:
  14.     ~A(){std::cout << "DTOR A" << std::endl;}
  15. };
  16.  
  17. class B: public A{
  18.     public:
  19.     B():A(1){};
  20.     ~B(){std::cout << "DTOR B" << std::endl;}
  21. };
  22.  
  23. class C: public A{
  24.     public:
  25.     C():A(2){};
  26.     ~C(){std::cout << "DTOR B" << std::endl;}
  27. };
  28.  
  29. void A::deleter(){
  30.      if(type==1){
  31.         delete static_cast<B* const>(this);
  32.     }else if(type==2){
  33.         delete static_cast<C* const>(this);
  34.     }
  35. }
  36.  
  37. int main(){
  38.       A * a = new B();
  39.       a->deleter();
  40. }
Success #stdin #stdout 0s 3476KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
DTOR B
DTOR A
https://ideone.com/pd88xy
language:
C++14 (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!