//public static void changNumber(AB a)
public void changNumber(AB ob)
{
Console.WriteLine("Inside Method Call Before Modification, Number = " + ob.number);
ob.number = 500;
Console.WriteLine("Inside Method Call After Modification, Number = " + ob.number);
ob = null;
// ob = obj2;
Console.WriteLine("Inside Method Call when ob = NULL, Number = " + ob);
}
public static void Main()
{
AB ob1 = new AB();
ob1.number = 34;
Console.WriteLine("Before Method Call Number = " + ob1.number);
CD obj2 = new CD();
//CD.changNumber(ob1) ;
obj2.changNumber(ob1);
Console.WriteLine("After Method Call Number = " + ob1.number);
}