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  1. #include <memory>
  2. #include <vector>
  3. #include <iostream>
  4.  
  5. struct base {
  6.     virtual void muu() = 0;
  7. };
  8.  
  9. struct monster1 : public base {
  10.     virtual void muu() { std::cout << "muuuu\n"; }
  11. };
  12.  
  13. struct monster2 : public base {
  14.     virtual void muu() { std::cout <<  "miau\n"; }
  15. };
  16.  
  17. int main() {
  18.     std::vector< std::unique_ptr<base> >  potworki;
  19.     potworki.emplace_back(); // dodaje nowy element na koncu wektora
  20.     potworki.back().reset(new monster1); // bierze ostatnio dodany element, za pomoca .reset ustawiasz wskaznik na nowo zrobiony obiekt
  21.  
  22.     potworki.emplace_back(new monster2); // mozna tez tak, jako ze konstruktor unique_ptr moze przyjac pointer na element podklasy base
  23.  
  24.     for(auto& potworek : potworki) {
  25.         potworek->muu();
  26.     }
  27. }
Success #stdin #stdout 0s 3028KB
comments (?)
stdin
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Standard input is empty
stdout
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muuuu
miau
https://ideone.com/i93Bi7
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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