using System;

public class Program

{

    public static void Main()

    {

    }  //Variable declarations

            string option = "";

            string f = "";

            int quantity = 0;

            double cost = 0.0;

            double amount = 0.0;

            double loyalty = 0.0;

            double Loyaltybill = 0.0;

            double remainingPoints = 0.0;

            string s = "";

            double use = 0.0;

            //Display title

            Console.WriteLine("Blue Brew Restaurant");

            //Ask for the user's desired actions

            Console.WriteLine("Choose an option:");

            Console.WriteLine(" 1. Select Food \n 2. Select Drink \n 3. Calculate Bill \n 4. Use Loyalty Card ");

            option = Console.ReadLine();

            if (option == "1")

            {

                Console.WriteLine("Here are the food items: ");

                Console.WriteLine(" a. Spam b. Beef Tapa c. Fried Chicken");

                f = Console.ReadLine();

​

​

                if (f == "a")

                {

                    Console.WriteLine("Enter quantity");

                    quantity = int.Parse(Console.ReadLine());

                    Console.WriteLine("You ordered " + quantity + " Spam");

​

​

                }

                else if (f == "b")

                {

                    Console.WriteLine("Enter quantity");

                    quantity = int.Parse(Console.ReadLine());

                    Console.WriteLine("You ordered " + quantity + " Beef Tapa");

                }

​

​

                else if (f == "c")

                {

                    Console.WriteLine("Enter quantity");

                    quantity = int.Parse(Console.ReadLine());

                    Console.WriteLine("You ordered " + quantity + " Fried Chicken");

​

​

                }

​

​

            }

​

​

            if (option == "2")

            {

                Console.WriteLine("\n What is your order? ");

                Console.WriteLine(" a. Orange Juice  b. Iced Tea  c. Coke ");

                f = Console.ReadLine();

​

​

                if (f == "a")

                {

                    Console.WriteLine("Enter quantity");

                    quantity = int.Parse(Console.ReadLine());

                    Console.WriteLine("You ordered " + quantity + " Orange Juice");

​

​

                }

                else if (f == "b")

                {

                    Console.WriteLine("Enter quantity");

                    quantity = int.Parse(Console.ReadLine());

                    Console.WriteLine("You ordered " + quantity + " Iced Tea");

                }

​

​

                else if (f == "c")

                {

                    Console.WriteLine("Enter quantity");

                    quantity = int.Parse(Console.ReadLine());

                    Console.WriteLine("You ordered " + quantity + " Coke");

​

​

                }

​

​

            }

​

            if (option == "3")

            {

                Console.WriteLine("\nPlease enter your total order cost:");

                cost = double.Parse(Console.ReadLine());

                Console.WriteLine("\nTake note of the following additional charges: \n 12% charge for VAT \n 10% service charge ");

                Console.WriteLine("\nAre you a Senior Citizen or a PWD? (y) or (n) ");

                s = Console.ReadLine();

​

​

​

                if (s == "y")

                {

                    amount = cost + (cost * .12) + (cost * .10) - (cost * .20);

                    Console.WriteLine("The total amount to be paid is " + amount);

​

                }

​

​

​

                else if (s == "n")

                {

                    amount = cost + (cost * .12) + (cost * .10);

                    Console.WriteLine("The total amount to be paid is: " + amount);

                }

​

​

​

            }

​

            if (option == "4")

            {

                Console.WriteLine("Please enter your total bill:");

                amount = double.Parse(Console.ReadLine());

                Console.WriteLine("Please enter your loyalty card balance:");

                loyalty = double.Parse(Console.ReadLine());

                Console.WriteLine("How much loyalty card points do you want to use?: ");

                use = double.Parse(Console.ReadLine());

​

                if (amount > use)

                {

                    Loyaltybill = amount - use;

                    Console.WriteLine("amount to pay: " + Loyaltybill);

​

                    remainingPoints = loyalty - use;

                    Console.WriteLine("Remaining loyalty card balance " + remainingPoints);

                }

                else if (amount < use)

                {

                    Console.WriteLine("Not Applicable");

                }

            }

            Console.Read();

​

​

}