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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. class Base {
  5. public:
  6.     virtual void go() {
  7.         std::cout << "I am the base class" << std::endl;
  8.     }
  9. };
  10.  
  11. class DerA : public Base {
  12.     void go() {
  13.         std::cout << "I am the first derivative" << std::endl;
  14.     }
  15. };
  16.  
  17. class DerB : public Base {
  18.     void go() {
  19.         std::cout << "I am the second derivative" << std::endl;
  20.     }
  21. };
  22.  
  23. class UnrelatedClass {
  24. public:
  25.     std::vector<Base*> vec;
  26.     void add_to_vec(Base* thing) {
  27.         vec.push_back(thing);
  28.     }
  29. };
  30.  
  31. int main() {
  32.     Base base;
  33.     DerA dera;
  34.     DerB derb;
  35.  
  36.     UnrelatedClass uc;
  37.     uc.add_to_vec(&base);
  38.     uc.add_to_vec(&dera);
  39.     uc.add_to_vec(&derb);
  40.  
  41.     for (auto thing : uc.vec) {
  42.         thing->go();
  43.     }
  44.  
  45.     return 0;
  46. }
Success #stdin #stdout 0s 3476KB
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stdin
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Standard input is empty
stdout
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I am the base class
I am the first derivative
I am the second derivative
https://ideone.com/LJEz26
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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