fork download
copy 
  1. #include <iostream>
  2. #include <memory>
  3. #include <string>
  4.  
  5. class Widget { 
  6.     public:
  7.         Widget(): pImpl(std::make_shared<Impl>()),
  8.                   pc(new CAT){}
  9.         ~Widget() {
  10.             delete pc; // I know we should put this code to cpp
  11.                        // I am just want to show the difference behavior
  12.                        // between raw pointer and smart pointer
  13.                        // when widget object destruct
  14.         }
  15.     private:
  16.         struct Impl {
  17.             std::string name;
  18.             Impl(){std::cout<<"Impl"<<std::endl;}
  19.             ~Impl(){std::cout<<"~Impl"<<std::endl;}
  20.         };
  21.         std::shared_ptr<Impl> pImpl;  // use smart pointer
  22.         struct CAT 
  23.         {
  24.             std::string name;
  25.             CAT(){std::cout<<"CAT"<<std::endl;}
  26.             ~CAT(){std::cout<<"~CAT"<<std::endl;}
  27.         };  
  28.         CAT *pc;  //raw pointer
  29. };
  30.  
  31.  
  32. int main() {
  33.     Widget w;
  34.     return 0;
  35. }
Success #stdin #stdout 0s 3276KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Impl
CAT
~CAT
~Impl
https://ideone.com/Cny86Z
language:
C++14 (gcc 8.3)
created:
9 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!