/*The Subway food store wants to have new software to handle their day-to-day task. It has the following

requirements

1. It wants to handle products, customer and staffs

2. It wants staff to handle

a. Serving of food if staff is Delivery person

b. Clean the desk if staff is Servant

c. Generate bill if staff is Accountant

3. It wants customer to

a. Order the food

b. Pay the bill

c. Take the food

4. In all above cases, products will be data model.*/

​

using System;

​

class SubWay

{

    string products;

}

​

class Staff : SubWay

{

    protected int num;

    public Staff(int num)

    {

        this.num=num;

    }

    private int deliveryPerson=0;

    private int servant=1;

    private int accountant=2;

    public void Function(int a)

    {

        if(a==deliveryPerson)

            Console.WriteLine("Serve the food");

        else if(a==servant)

            Console.WriteLine("Clean the desk");

        else if(a==accountant)

            Console.WriteLine("Generate bill");

    }

}

​

/*3. It wants customer to

a. Order the food

b. Pay the bill

c. Take the food*/

​

class Customer : Staff

{

    public Customer():base(1)

    {}

    public void Order()

    {

        Console.WriteLine("The order must made at the counter section");

    }

    public void Pay()

    {

        Console.WriteLine("The bill should paid at the accountant");

    }

    public void Take()

    {

        Console.WriteLine("After paying the bill the staff will deliver the food");

    }

}

​

public class Program

{

    public static void Main()

    {

        Customer c=new Customer();

        c.Function(0);

        c.Function(1);

        c.Function(2);

        c.Function(3);

        c.Order();

        c.Pay();

        c.Take();

    }

}