using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Welcome To the Binary Calculator!!!");

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

        Console.WriteLine();

        Console.WriteLine("Would you like; \n \n 1. Binary to Denary \n 2. Denary to Binary \n 3. Binary Addition \n 4. Binary Multiplication \n 5. Binary Subtraction");

        Console.WriteLine();

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

        bool option=false;

        while (option==false)

        {

        switch (choice)

        {

            case 1:

                btd();

                option=true;

                break;

            case 2:

                dtb();

                option=true;

                break;

            case 3:

                ba();

                option=true;

                break;

            case 4:

                bm();

                option=true;

                break;

            case 5:

                bs();

                option=true;

                break;

            default:

                Console.WriteLine("Invalid choice. Please select a valid option.");

                Console.WriteLine("1. Binary to Denary \n 2. Denary to Binary \n 3. Binary Addition \n 4. Binary Multiplication \n 5. Binary Subtraction");

                continue;

        }

            static void btd()

            {

                Console.Write("Please enter your binary number: ");

                string num = Console.ReadLine();

            }

            static void dtb()

            {

                Console.Write("Please enter your denary number: ");

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

            }

            static void ba()

            {

                Console.Write("Please enter your first binary number: ");

                string num1 = Console.ReadLine();

                Console.Write("Please enter your second binary number: ");

                string num2 = Console.ReadLine();

            }

            static void bm()

            {

                Console.Write("Please enter your first binary number: ");

                string num1 = Console.ReadLine();

                Console.Write("Please enter your second binary number: ");

                string num2 = Console.ReadLine();

            }

            static void bs()

            {

                Console.Write("Please enter your first binary number: ");

                string num1 = Console.ReadLine();

                Console.Write("Please enter your second binary number: ");

                string num2 = Console.ReadLine();

            }

        }

    }

}