using System;

public static class Program

{

​

    public static void Main()

    {

        bool end = false;

        int bill = 0;

        Console.WriteLine("Welcome to Cai's kitchen. We offer diverse dishes");

        Console.WriteLine("(Please type: O to order, X to remove and T to takeout)");

        Console.WriteLine("C1 = Spaghetti: 100 Php");

        Console.WriteLine("C2 = Carbonara: 100 Php");

        Console.WriteLine("C3 = Lasagna: 150 Php");

        Console.WriteLine("C4 = Pesto Pasta: 100 Php");

        Console.WriteLine("C5 = Garlic Bread: 50 Php (Good for 3 people)");

        Console.WriteLine("C6 = 15 Inch Pizza: 200 Php (Pepperoni only)");

        Console.WriteLine("C7 = Mac and Cheese: 125 Php");

        Console.WriteLine("C8 = Lobster Mac and Cheese: 190 Php");

        Console.WriteLine("C9 = Grilled Steak with Potato Salad: 250 Php");

        Console.WriteLine("C10 = Chicken Teriyaki: 150 Php");

​

        while (end == false)

        {

​

​

            string action = Console.ReadLine().ToUpper();

            switch (action)

            {

                case "O":

                    Console.WriteLine("what is your order?");

                    string a = Console.ReadLine().ToUpper();

                    Console.WriteLine("how many?");

                    int b = 0;

                    b = Convert.ToInt32(Console.ReadLine());

                    switch (a)

                    {

                        case "C1":

                            bill += 100 * b;

                            Console.WriteLine("ordered: Spaghetti x:" + b);

                            break;

                        case "C2":

                            bill += 100 * b;

                            Console.WriteLine("ordered: Carbonara x:" + b);

                            break;

                        case "C3":

                            bill += 150 * b;

                            Console.WriteLine("ordered: Lasagna x:" + b);

                            break;

                        case "C4":

                            bill += 100 * b;

                            Console.WriteLine("ordered: Pesto Pasta x:" + b);

                            break;

                        case "C5":

                            bill += 50 * b;

                            Console.WriteLine("ordered: Garlic Bread x:" + b);

                            break;

                        case "C6":

                            bill += 200 * b;

                            Console.WriteLine("ordered: 15 Inch Pizza x:" + b);

                            break;

                        case "C7":

                            bill += 125 * b;

                            Console.WriteLine("ordered: Mac and Cheese x:" + b);

                            break;

                        case "C8":

                            bill += 190 * b;

                            Console.WriteLine("ordered: Lobster Mac and Cheese x:" + b);

                            break;

                        case "C9":

                            bill += 250 * b;

                            Console.WriteLine("ordered: Grilled Steak with Potato Salad x:" + b);

                            break;

                        case "C10":

                            bill += 150 * b;

                            Console.WriteLine("ordered: Chicken Teriyaki x:" + b);

                            break;

                        default:

                            Console.WriteLine("i'm sorry, i didn't understand that (order cancelled)");

                            break;

                    }

                    break;

​

                case "X":

                    Console.WriteLine("what do you want to remove?");

                    string c = Console.ReadLine().ToUpper();

                    Console.WriteLine("How");

                    int d = 0;

                    d = Convert.ToInt32(Console.ReadLine());

                    switch (c)

                    {

                         case "C1":

                            bill -= 100 * d;

                            Console.WriteLine("removed: Spaghetti x:" + d);

                            break;

                        case "C2":

                            bill -= 100 * d;

                            Console.WriteLine("removed: Carbonara x:" + d);

                            break;

                        case "C3":

                            bill -= 150 * d;

                            Console.WriteLine("removed: Lasagna x:" + d);

                            break;

                        case "C4":

                            bill -= 100 * d;

                            Console.WriteLine("removed: Pesto Pasta x:" + d);

                            break;

                        case "C5":

                            bill -= 50 * d;

                            Console.WriteLine("removed: Garlic Bread x:" + d);

                            break;

                        case "C6":

                            bill -= 200 * d;

                            Console.WriteLine("removed: 15 Inch Pizza x:" + d);

                            break;

                        case "C7":

                            bill -= 125 * d;

                            Console.WriteLine("removed: Mac and Cheese x:" + d);

                            break;

                        case "C8":

                            bill -= 190 * d;

                            Console.WriteLine("removed: Lobster Mac and Cheese x:" + d);

                            break;

                        case "C9":

                            bill -= 250 * d;

                            Console.WriteLine("removed: Grilled Steak with Potato Salad x:" + d);

                            break;

                        case "C10":

                            bill -= 150 * d;

                            Console.WriteLine("removed: Chicken Teriyaki x:" + d);

                            break;

                        default:

                            Console.WriteLine("I'm sorry, can you repeat that?");

                            break;

                    }

                    break;

                case "T":

                    Console.WriteLine();

                    end = true;

                    bool paid = false;

                    while (paid == false)

                    {

                    Console.WriteLine("Your total is: "+ bill);

                    Console.WriteLine("Please enter your payment: ");

                    int payment = Convert.ToInt32(Console.ReadLine());

                        if (payment >= bill)

                        {

                            int change = payment - bill;

                            if (change>0) { 

                            Console.WriteLine("Here is your change: " + change);}

                            paid = true;

                        }

                        else

                        {

                            Console.WriteLine("Payment should be " + bill + " or higher.");

                        }

                    }

​

                    break;

                default:

                    Console.WriteLine("Can you please repeat that?");

                    break;

            };

        }

        Console.WriteLine("Thank you for coming!");

    }

}