During Eid Days, people usually go out for refreshment and want to eat some different unusual things. Suppose you went to a refreshment center having one of the desi dish of GolGappay. But due to rush there was a queue of customers and at your turn you told the owner that you are 2^nd semester student of computer science in UIIT, Arid University and offered your services to automate the point of sale to reduce owner's load of customer queries and sales. Owner felt happy to listen your offer and agreed because he was also a student of same department back in 2004 but left degree incomplete due to some personal issues. Next day he sent you a main function having menu options and requested you to Complete the program in C++ Language within 48 hours. Only class is required to complete the main function requirements.

int main()

{

GolGappay *ggp; //class name is GolGappay having only one variable price which is fixed Rs./100-

//and have only one function other than constructor.

//Also you cannot create object of this class

int choice;

char option;

do {

cout<<"Welcome there are 6 GolGappay per plate";

cout<<" Press 1 for Sour and Rs.100/- per plate";

cout<<" Press 2 for sweet and 10% extra charge";

cout<<" Press 3 for Yogurt and 20% extra charge";

cout<<" Enter your choice:";

cin>>choice;

switch(choice)

{

case 1:

ggp= new Khatay();

ggp->show(); //All show functions ask about quantity of plates and display the bill

break;

case 2:

ggp= new Meethy();

ggp->show();

break;

case 3:

ggp= new Dahiwale();

ggp->show();

break;

deafult:cout<<" Invalid Option please try again..";

}

cout<<" Do you want to continue....y/n";

cin>>option;

}while(option=='y');

return 0;

}