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  1. #include <iostream>
  2. #include <memory>
  3. #include <vector>
  4.  
  5. class Parent
  6. {
  7. public:
  8.     virtual ~Parent() = default;
  9.     virtual void dofunc() = 0;
  10. };
  11.  
  12. class Child1: public Parent
  13. {
  14. public:
  15.     void dofunc()
  16.     {
  17.         std::cout << "Child 1\n";
  18.     }
  19. };
  20.  
  21. class Child2: public Parent
  22. {
  23. public:
  24.     void dofunc()
  25.     {
  26.         std::cout << "Child 2\n";
  27.     }
  28. };
  29.  
  30. void myFunc(Parent *c)
  31. {
  32.     c->dofunc();
  33. }
  34.  
  35. int main()
  36. {
  37.     std::vector<std::unique_ptr<Parent>> v;
  38.  
  39.     v.push_back(std::make_unique<Child1>()); // use smart pointers to manage the alloccation
  40.     v.push_back(std::make_unique<Child2>());
  41.  
  42.     myFunc(v[0].get());
  43.     myFunc(v[1].get());
  44.     //we could just as easily 
  45.     v[0]->dofunc();
  46.     // in most cases, but sonmewtimes it's good/useful to hide what's really going on
  47.  
  48.     return 0;
  49. }
  50.  
Success #stdin #stdout 0s 15240KB
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stdin
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Standard input is empty
stdout
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Child 1
Child 2
Child 1
https://ideone.com/s7AAYW
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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