using System;

using System.Dynamic;

​

public class Program

{

    //You can ignore all of the 'static' keywords here, they're all just to make this work in-example

    //Ignore these two declerations as well, they're only for the mock context

    static dynamic lubeChbox = new ExpandoObject();

    static dynamic oilChbox = new ExpandoObject();

    public const double OIL_CHANGE = 29.95, LUBE_JOB = 25;

    public static void Main()

    {

        Console.WriteLine("# Both lubeChbox and oilChbox are checked");

        lubeChbox.Checked = true;

        oilChbox.Checked = true;

        Console.WriteLine("Oillube with IF statements: " + Oillube_If());

        Console.WriteLine("Oillube with tertairy statements: " + Oillube_Tertiary());

        Console.WriteLine("\n# Only lubeChbox is checked");

        lubeChbox.Checked = true;

        oilChbox.Checked = false;

        Console.WriteLine("Oillube with IF statements: " + Oillube_If());

        Console.WriteLine("Oillube with tertairy statements: " + Oillube_Tertiary());

        Console.WriteLine("\n# Only oilChbox is checked");

        lubeChbox.Checked = false;

        oilChbox.Checked = true;

        Console.WriteLine("Oillube with IF statements: " + Oillube_If());

        Console.WriteLine("Oillube with tertairy statements: " + Oillube_Tertiary());

        Console.WriteLine("\n# Neither are checked");

        lubeChbox.Checked = false;

        oilChbox.Checked = false;

        Console.WriteLine("Oillube with IF statements: " + Oillube_If());

        Console.WriteLine("Oillube with tertairy statements: " + Oillube_Tertiary());

    }

    static double Oillube_If()

    {

        //if they are both checked

        if(lubeChbox.Checked && oilChbox.Checked)

        {

            //Creating Variables sum to hold the value of the two

            double sum;

            sum = OIL_CHANGE + LUBE_JOB;

            //returning sum

            return sum;

        }

        //checking if the Oil is checked

        if (oilChbox.Checked)

        {

            return OIL_CHANGE;

        }

        //checking if the lube is checked

        if (lubeChbox.Checked)

        {

            return LUBE_JOB;

        }

        //just returning to get ride off the red line under the Method

        return 0;

    }

    static double Oillube_Tertiary()

    {

        return (lubeChbox.Checked ? LUBE_JOB : 0) + (oilChbox.Checked ? OIL_CHANGE : 0);

    }

}