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  1. #include <iostream>
  2. #include <memory>
  3.  
  4. class Foo {};
  5.  
  6. template <typename T>
  7. class A {
  8.   public:
  9. 	virtual void foo() = 0;
  10. };
  11.  
  12. template <typename S, typename T>
  13. class B : public A<T> {
  14.   public:
  15. 	void foo() override {
  16. 		std::cout << "Hello";
  17. 	}
  18. };
  19.  
  20. int main() {
  21. 	std::unique_ptr<B<int, Foo>> t = std::make_unique<B<int, Foo>>();
  22. 	std::unique_ptr<A<Foo>> p = std::move(t);
  23. 	p->foo();
  24. 	// your code goes here
  25. 	return 0;
  26. }
Success #stdin #stdout 0s 15240KB
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Standard input is empty
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Hello
https://ideone.com/5bZyvF
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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