// CS304P Lab 9 Problem KST Learning #include #include using namespace std; class PlainBox { public: virtual void display() { cout << "PlainBox Class is Called\n\n"; } }; class LunchBox: public PlainBox { public: void display() { cout << "LunchBox Class is Called\n\n"; } }; class GiftBox: public PlainBox { public: void display() { cout << "GiftBox Class is Called\n\n"; } }; main() { PlainBox *P1 = new LunchBox; PlainBox *P2 = new GiftBox; P1 -> display(); P2 -> display(); getch(); return 0; }