#include <iostream>
using namespace std;

class BC {
public:
    void show(void) { cout << " \n I am in base class.."; }
};
class DC : public BC {
public:
    void show(void) { cout << " \n I am derived class.."; }
};
int main()
{
    BC* ptr1;
    DC dobj;
    ptr1 = &dobj;
    ptr1->show();
}