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  1. #include <iostream>
  2. #include <memory>
  3. #include <vector>
  4. using namespace std;
  5.  
  6. struct base {
  7. 	virtual void foo() {
  8. 		cout << "base" << endl;
  9. 	}
  10. };
  11.  
  12. struct a: base {
  13. 	void foo() override {
  14. 		cout << "a" << endl;
  15. 	}	
  16. };
  17. struct b: base {
  18. 	void foo() override {
  19. 		cout << "b" << endl;
  20. 	}
  21. };
  22.  
  23. int main() {
  24. 	vector<unique_ptr<base>> container;
  25.  
  26. 	for(int i = 0; i < 5; ++i) {
  27. 		container.emplace_back(new a{});
  28. 		container.emplace_back(new b{});
  29. 	}
  30.  
  31. 	for(auto &el: container) {
  32. 		el->foo();
  33. 	}
  34. 	return 0;
  35. }
Success #stdin #stdout 0s 3464KB
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Standard input is empty
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a
b
a
b
a
b
a
b
a
b
https://ideone.com/5RH6ji
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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