using System;

​

public class Program

{

    public static void Main()

    {

        /***************************************

    *Name: Alejandro Loredo

    *Date: 9/14/2023

    *Class Period : 4

    *Project Name: Food Ordering App

    *Project Description: This program allows the user to order food from a restaurant.

    ***************************************/

        //The Code starts off by asking the user for their sandwich

        Console.WriteLine("Enter 1 if you want a chicken sandwich ($7.50)");

        Console.WriteLine("Enter 2 if you want a beef sandwich ($8.50)");

        Console.WriteLine("Enter 3 if you want a veggie burger ($7.75)");

        //The  variables are declared here that will be used in the output.

        double price = 0.0;

        double change = 0.0;

        double pay = 0.0;

        double discount = 0.0;

        String fry = "";

        String bev = "";

        //The Code makes sure the user enters a real sandwich

        String input = Console.ReadLine();

        int ParsedValue;

        bool success = int.TryParse(input, out ParsedValue);

        String Sandwich = "";

        //The Code uses if statements and switch statements to calculate the price based on the answer.

        if (success)

        {

            int num = Convert.ToInt32(input);

            switch (num)

            {

                case (1):

                    Sandwich = ("Chicken Sandwich");

                    price += 7.5;

                    break;

                case (2):

                    Sandwich = ("Beef Sandwich");

                    price += 8.5;

                    break;

                case (3):

                    Sandwich = ("Veggie Burger");

                    price += 7.75;

                    break;

                default:

                    Console.WriteLine("Wrong Input");

                    Sandwich = "";

                    break;

            }

        }

        else

        {

            Console.WriteLine("Wrong input");

            Sandwich = "";

        }

​

        //The Code asks the user if the want a beverage.

        Console.WriteLine("Enter 'yes' for a beverage or 'no'.");

        String input2 = Console.ReadLine();

        bool success2 = true;

        bool drink = false;

        int drinksize = 0;

        input2.ToLower();

        switch (input2)

        {

            case "yes":

                drink = true;

                //If the user want a beverage, the code asks the size.

                Console.WriteLine("Enter 1 for a small ($1.50), 2 for a medium ($2.00), 3 for a large ($2.25).");

                String input3 = Console.ReadLine();

                int ParsedValue2;

                success2 = int.TryParse(input3, out ParsedValue2);

                if (success2)

                {

                    drinksize = Convert.ToInt32(input3);

                    if (drinksize != 1 && drinksize != 2 && drinksize != 3)

                        Console.WriteLine("Wrong input. Enter a size on the menu.");

                }

​

                break;

            case "no":

                drink = false;

                break;

            default:

                Console.WriteLine("Wrong input");

                success2 = false;

                break;

        }

        //The Code asks the User of they want french fries

        Console.WriteLine("Would you like French fries? (Yes/no)");

        String input4 = Console.ReadLine();

        bool success3 = true;

        bool fries = false;

        int friesSize = 0;

        input4.ToLower();

        switch (input4)

        {

            case "yes":

                fries = true;

                //If the user want fries, the code asks the size.

                Console.WriteLine("Enter 1 for a small ($1.50), 2 for a medium ($2.00), 3 for a large ($2.50).");

                String input5 = Console.ReadLine();

                int parsedValue3;

                success3 = int.TryParse(input5, out parsedValue3);

                if (success3)

                {

                    friesSize = Convert.ToInt32(input5);

                    if (friesSize != 1 && friesSize != 2 && friesSize != 3)

                        Console.WriteLine("Wrong input. Enter a size on the menu.");

                    if (friesSize == 1)

                    {

                        Console.WriteLine("Would you like to mega size your fries?");

                        String input6 = Console.ReadLine();

                        input6.ToLower();

                        if (input6 == "yes")

                            friesSize = 3;

                        else if (input6 == "no")

                            friesSize = 1;

                        else

                            Console.WriteLine("Wrong input");

                    }

                }

​

                break;

            case "no":

                fries = false;

                break;

            default:

                Console.WriteLine("Wrong input");

                fries = false;

                break;

        }

        //Calculates the price based on the sizes of the drink and fries the user chose

        switch (drinksize)

        {

            case 1:

                price += 1.5;

                bev = "small drink";

                break;

            case 2:

                price += 2.0;

                bev = "medium drink";

                break;

            case 3:

                price += 2.25;

                bev = "large drink";

                break;

            default:

                bev = "";

                break;

        }

​

        switch (friesSize)

        {

            case 1:

                price += 1.5;

                fry = "small fries";

                break;

            case 2:

                price += 2.0;

                fry = "medium fries";

                break;

            case 3:

                price += 2.5;

                fry = "large fries";

                break;

            default:

                fry = "";

                break;

        }

        //gives a discount if the user ordered all three items

        if (drink && fries && Sandwich!= "")

            discount = 1.0;

        Console.WriteLine("**************************************************");

        Console.WriteLine($"Your order: {Sandwich}");

        Console.WriteLine($"{fry}");

        Console.WriteLine($"{bev}");

        Console.WriteLine($"Your total is ${price} - ${discount} = ${price - discount}");

        Console.WriteLine("Please enter a dollar value to pay: ");

        String input7 = Console.ReadLine();

        double ParsedValue4;

        bool success5 = Double.TryParse(input7, out ParsedValue4);

        pay = Convert.ToDouble(input7);

        change = pay - (price - discount);

        if (price - discount > pay)

            Console.WriteLine("You did not pay enough for the order");

        //prints out the reciept

        else

        {

            Console.WriteLine($"Your change is ${change}");

            Console.WriteLine("***************************************");

            Console.WriteLine("Order:");

            Console.WriteLine($" {Sandwich}");

            Console.WriteLine($" {bev}");

            Console.WriteLine($" {fry}");

            Console.WriteLine("***************************************");

            Console.Write("Subtotal:");

            Console.WriteLine($"${price}");

            Console.WriteLine($"Discount ${discount}");

            Console.WriteLine($"Total ${price - discount}");

            Console.WriteLine($"Change ${change}");

        }

    }

}