Question

C++ program which demonstrates virtual destructor.

Answer 1

using namespace std;
  
class base {
  public:
    base()     
    { cout<<"Constructing base \n"; }
    ~base()
    { cout<<"Destructing base \n"; }     
};
  
class derived: public base {
  public:
    derived()     
    { cout<<"Constructing derived \n"; }
    ~derived()
    { cout<<"Destructing derived \n"; }
};
  
int main(void)
{
  derived *d = new derived();  
  base *b = d;
  delete b;
  getchar();
  return 0;
}