#include <iostream>
class A
{
public:
    A() 
    { 
        std::cout << "A()"; 
    }
    void memget()
    {
        std::cout << sizeof(*this);
    }
    virtual void f()
    {
        std::cout << "f()";
    }
    virtual void f2()
    {
        std::cout << "f2()";
    }
    virtual ~A() 
    {
        std::cout << "~A()";
    }
};
struct VPTR
{
    void (*function0)(void);
    void (*function1)(void);
    void (*function2)(void);
};
int main()
{
    A* ob = new A;
    VPTR** vPtr = reinterpret_cast<VPTR**>(ob);
    (*vPtr)->function0();
    ob->memget();
    delete ob;
    return 0;
}