#include <iostream>   // cout, endl
#include <memory>     // shared_ptr
#include <string>     // string
 
struct Base
{
   virtual std::string GetName() const = 0;
   ~Base() { std::cout << "~Base\n"; } 
};
 
struct Concrete : public Base
{
   std::string GetName() const
   {
      return "Concrete";
   }
   ~Concrete() { std::cout << "~Concrete\n"; } 
};
 
int main()
{
  {
    std::cout << "test 1\n";
    std::shared_ptr<Base> b(new Concrete);
    std::cout << b->GetName() << std::endl;
  }
 
  {
    std::cout << "test 2\n";
    Base* pBase = new Concrete;
    std::shared_ptr<Base> b(pBase);
    std::cout << b->GetName() << std::endl;
  }
 
}

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