using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(" Hello, this is The Gi More Advanced Calculator! ");

            Console.ReadLine();

            menu();

         }

            static void menu()

            { 

                int options; // my  options for the menue will go here!

               Console.BackgroundColor = ConsoleColor.Blue;

            Console.ForegroundColor = ConsoleColor.White;

            Console.Clear();

            Console.WriteLine("       Menue");

            Console.WriteLine("___________________");

            Console.WriteLine("1. Add");

            Console.WriteLine("2. Subtract");

            Console.WriteLine("3. Multiply");

            Console.WriteLine("4. Divide");

            Console.WriteLine("5. Square Roots");

            Console.WriteLine("6. Exit");

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

            if (options == 1)

            {

               add();

            }

                if (options == 5)

            {

               SquareRoot();

            }

                if (options == 6)

            {

               exit();

            }

            if (options == 2)

            {

               subtract();

            }

            if (options == 3)

            {

               multiply();

            }

                if (options == 4)

            {

               divide();

            }

           }

        static void add()

        {

          Console.Clear();

        Console.WriteLine("i am in the addition method ");

        Console.ReadLine();

        }

    static void SquareRoot()

        {

           double number; //stores a larger number inputed by user 

        double answer;    

        int work;

            Console.BackgroundColor = ConsoleColor.Yellow;

            Console.ForegroundColor = ConsoleColor.Black;

        Console.Clear();

        Console.WriteLine("I am in the SquareRoot method ");

        Console.WriteLine();

        Console.WriteLine("Please enter a number and i will find its SquareRoot!");

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

        answer = Math.Sqrt(number);

        Console.WriteLine("The SquareRoot of " + number + " is " + answer);

        Console.ReadLine();

        menu();

    }

        static void exit()

        {

          Environment.Exit(0);

        }

        static void subtract()

        {

        Console.Clear();

        Console.WriteLine("i am in the subtract method ");

        Console.ReadLine(); 

        }

        static void multiply()

        {

        Console.Clear();

        Console.WriteLine("i am in the multiply method ");

        Console.ReadLine();

        }

            static void divide()

        {

        Console.Clear();

        Console.WriteLine("i am in the divide method ");

        Console.ReadLine();

        }

      }

​