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  1. #include <iostream>
  2. #include <memory>
  3. #include <unordered_map>
  4. #include <vector>
  5. using namespace std;
  6. class A{
  7. public:
  8.     virtual void sing()=0;
  9. protected:
  10.     virtual ~A(){std::cout<<"~A\n";};
  11. };
  12. class B : public A{
  13. public:
  14.     virtual void sing(){std::cout<<"do re mi\n";};
  15.  
  16.     virtual ~B(){std::cout<<"~B\n";};   
  17. };
  18.  
  19. shared_ptr<A> creatA(){
  20. 	//shared_ptr<A> P=make_shared<B>();
  21. 	//shared_ptr<A> P(new B());
  22. 	shared_ptr<A> P(new B());
  23. 	return P;
  24. }    
  25.  
  26.  
  27.  
  28. int main() {
  29. 	typedef std::vector<shared_ptr<A>> container_type;
  30. 	typedef std::vector<shared_ptr<A>>::iterator itee;
  31. 	container_type cont;
  32. 	for(int i=0;i<3;i++){
  33. 		cont.push_back(creatA());
  34. 	}
  35. 	for(itee ite=cont.begin();ite!=cont.end();++ite){
  36. 		(*ite)->sing();
  37. 	}
  38.  
  39. 	// your code goes here
  40. 	//shared_ptr<std::unordered_map<std::string, std::string>> ptrMapTemp = make_shared<std::unordered_map<std::string, std::string>>();
  41.  
  42. 		shared_ptr<std::unordered_map<std::string, std::string>> ptrMapTemp;
  43. 	/*if(ptrMapTemp->empty()){
  44. 		cout<<"aaa"<<endl;
  45. 	}*/
  46.  
  47.  
  48. 	std::cout<<"main\n";
  49.  
  50. 	return 0;
  51. }
Success #stdin #stdout 0.01s 5544KB
comments (?)
stdin
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Standard input is empty
stdout
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do re mi
do re mi
do re mi
main
~B
~A
~B
~A
~B
~A
https://ideone.com/oIMnpQ
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
public

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