using System;

public class Program

{

    public static void Main()

    {

        int inum=72;

        string hex= inum.ToString("X");

        int newint= Convert.ToInt32(hex,16);

​

        Console.WriteLine(hex);

                hex="0xB76";

​

        Console.WriteLine("{0:X}",inum);

​

        int newint1= Convert.ToInt32(hex,16);

​

        Console.WriteLine(newint);

​

        Console.WriteLine(newint1);

    }

}