fork download
copy 
  1. #include <iostream>
  2. #include <memory>
  3.  
  4. using namespace std;
  5.  
  6. class Content {
  7. public:
  8.     virtual void info() = 0;
  9. };
  10.  
  11. class ContentA : public Content {
  12. public:
  13.     void info() override { cout << "Content A" << endl; }
  14.     int serial() { return 123; }
  15.     int num() { return 456; }
  16. };
  17.  
  18. class ContentB : public Content {
  19. public:
  20.     void info() override { cout << "Content B" << endl; }
  21.     int identifier() { return 789; }
  22. };
  23.  
  24. class Container {
  25. public:
  26.     virtual shared_ptr<Content> content() = 0;
  27.     virtual void info() = 0;
  28.     void contentInfo() { content()->info(); }
  29. };
  30.  
  31. class ContainerA : public Container {
  32. public:
  33.     ContainerA(shared_ptr<ContentA> content) : m_content(content) {}
  34.     shared_ptr<Content> content() { return m_content; }
  35.     void info() {
  36.     	auto identifier = m_content->serial() * m_content->num();
  37.     	cout << "Container A: " << identifier << endl;
  38.     }
  39. protected:
  40.     shared_ptr<ContentA> m_content;
  41. };
  42.  
  43. class ContainerB : public Container {
  44. public:
  45.     ContainerB(shared_ptr<ContentB> content) : m_content(content) {}
  46.     shared_ptr<Content> content() { return m_content; }
  47.     void info() {
  48.     	cout << "Container B: " << m_content->identifier() << endl;
  49.     }
  50. protected:
  51.     shared_ptr<ContentB> m_content; 
  52. };
  53.  
  54. int main() {
  55. 	ContainerA containerA(make_shared<ContentA>());
  56. 	containerA.info();
  57. 	containerA.contentInfo();
  58.  
  59. 	ContainerB containerB(make_shared<ContentB>());
  60. 	containerB.info();
  61. 	containerB.contentInfo();
  62.  
  63. 	return 0;
  64. }
Success #stdin #stdout 0s 15240KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Container A: 56088
Content A
Container B: 789
Content B
https://ideone.com/fxObZL
language:
C++ (gcc 8.3)
created:
5 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!