using System;

​

public class Program

{

    static byte save = 0;

    static void PrintByte()

    {

        int number = Convert.ToInt32(save);

        int count = 0;

        int byteNum = 0;

        while (number != 0)

        {

            int rem = number % 2;

            number /= 2;

            byteNum += (int)Math.Pow(10, count) * rem;

            count++;

        }

​

        Console.WriteLine(byteNum);

    }

​

    static void SaveValue(int number)

    {

        switch (number)

        {

            case 0: save |= 1 << 0; break;

            case 1: save |= 1 << 1; break;

            case 2: save |= 1 << 2; break;

            case 3: save |= 1 << 3; break;

            case 4: save |= 1 << 4; break;

            case 5: save |= 1 << 5; break;

            case 6: save |= 1 << 6; break;

            case 7: save |= 1 << 7; break;

        }

        Console.WriteLine("");

    }

    static void IsTrue(int number)

    {

        switch (number)

        {

            case 0: Console.WriteLine((save & 1 << 0) != 0); break;

            case 1: Console.WriteLine((save & 1 << 1) != 0); break;

            case 2: Console.WriteLine((save & 1 << 2) != 0); break;

            case 3: Console.WriteLine((save & 1 << 3) != 0); break;

            case 4: Console.WriteLine((save & 1 << 4) != 0); break;

            case 5: Console.WriteLine((save & 1 << 5) != 0); break;

            case 6: Console.WriteLine((save & 1 << 6) != 0); break;

            case 7: Console.WriteLine((save & 1 << 7) != 0); break;

            default: Console.WriteLine(false); break;

        }

    }

​

    public static void Main()

    {

        SaveValue(2);

        SaveValue(3);

        PrintByte();

        IsTrue(0);

        IsTrue(1);

        IsTrue(2);

        IsTrue(3);

        SaveValue(0);

        PrintByte();

        IsTrue(0);

        IsTrue(1);

        IsTrue(2);

        IsTrue(3);

    }

}