C# Boxing and Unboxing

using System; usingSystem.Collections.Generic; usingSystem.Linq; usingSystem.Text; namespace App9 { classProgram     { staticvoid Main(string[] args)         { int x = 10; Objectobj = x; Console.WriteLine(obj); obj = 33; Console.WriteLine(obj);             x = (int)obj; Console.WriteLine(x); Console.ReadLine();         }     } }

OUTPUT:         10         33         33