using System;
public class emp{
public string x {get; set;}
}
public class Program
{
public static void abc(ref emp e){e.x = "nit";}
public static void def(emp e) { e.x ="kum";}
public static void Main()
emp ee = new emp();
ee.x = "nits";
Console.WriteLine(ee.x);
abc(ref ee);
def(ee);
Console.Write(ee.x);