using System;

public class Program

{

    public static void Main()

    {

    //ex 1

        //binary to decimal

        Console.WriteLine(0b0); //converts number 0 (binary) to decimal(default), print it: 0 

        Console.WriteLine(0b1); //converts number 1 (binary) to decimal(default), print it: 1 

        Console.WriteLine(0b10); //converts number 10 (binary) to decimal(default), print it: 2 

        Console.WriteLine(0b101); //converts number 101 (binary) to decimal(default), print it: 5 

        Console.WriteLine(0b1100); //converts number 1100 (binary) to decimal(default), print it: 12 

        Console.WriteLine(0b1111); //converts number 1111 (binary) to decimal(default), print it: 15 

​

        // decimal to binary

        Console.WriteLine(Convert.ToString(3, 2)); //converts number to binary, then print it: 11

        Console.WriteLine(Convert.ToString(5, 2)); //converts number to binary, then print it: 101

        Console.WriteLine(Convert.ToString(7, 2)); //converts number to binary, then print it: 111

        Console.WriteLine(Convert.ToString(8, 2)); //converts number to binary, then print it: 1000

        Console.WriteLine(Convert.ToString(13, 2)); //converts number to binary, then print it: 1101

        Console.WriteLine(Convert.ToString(32, 2)); //converts number to binary, then print it: 100000

        Console.WriteLine(Convert.ToString(32, 2)); //converts number to binary, then print it: 100000

    //ex6

        //hex to decimal

        Console.WriteLine(0x7); //converts number 7 (hex) to decimal(default) and prints it: 7

        Console.WriteLine(0xA); //converts number A (hex) to decimal(default) and prints it: 10

        Console.WriteLine(0xF); //converts number F (hex) to decimal(default) and prints it: 15

        Console.WriteLine(0x10); //converts number 10 (hex) to decimal(default) and prints it:16

        Console.WriteLine(0x1f); //converts number 1F (hex) to decimal(default) and prints it: 31 

        Console.WriteLine(0x2F); //converts number 2f (hex) to decimal(default) and prints it: 47 

        Console.WriteLine(0xfb); //converts number fb (hex) to decimal(default) and prints it:251 

​

​

        //decimal to hex

        Console.WriteLine(Convert.ToString(64, 16)); //converts number to hex, then print it: 40

        Console.WriteLine(Convert.ToString(30, 16)); //converts number to hex, then print it: 1E

        Console.WriteLine(Convert.ToString(16, 16)); //converts number to hex, then print it: 10

        Console.WriteLine(Convert.ToString(20, 16)); //converts number to hex, then print it: 14

        Console.WriteLine(Convert.ToString(7, 16)); //converts number to hex, then print it: 7

​

         //from binary directly to hex

        Console.WriteLine(Convert.ToString(0b1100, 16)); //converts binary to hex then print it: c

        Console.WriteLine(Convert.ToString(0b10111111 , 16)); //converts binary to hex then print it: BF

        Console.WriteLine(Convert.ToString(0b10000001 , 16)); //converts binary to hex then print it: 81

​

​

​

    }

}