using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Note: Please select the corresponding number of your choice.");

        Console.WriteLine("(1) Calculator");

        Console.WriteLine("(2) Lucky Number");

        Console.WriteLine("(3) About the Code");

        Console.WriteLine("(4) End Program");

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

        int Choice1 = 1;

        int Choice2 = 2;

        int Choice3 = 3;

        int Choice4 = 4;

        if ((Answer)==(Choice1))

        {

            Console.WriteLine("_____________________________________________________________");

            Console.WriteLine("What Operation you would to use?");

            Console.WriteLine("(1) Addition");

            Console.WriteLine("(2) Subtraction");

            Console.WriteLine("(3) Multiplication");

            Console.WriteLine("(4) Division");

            int Answer1A = Convert.ToInt32(Console.ReadLine());

            if ((Answer1A)==(1))

            {

                Console.WriteLine("_____________________________________________________________");

                Console.WriteLine("Addition");

                Console.WriteLine

            }

        }

    }

}