using System;
public class Program
{
public class Node
public int Data;
public Node left;
public Node right;
}
public static void Main()
// next line creates instance of node (an object)
Node head = new Node();
head.Data = 5;
head.next = new Node();
head.next.Data = 7;
head.next.next = new Node();
Node newitem = new Node();
newitem.Data = 3;
newitem.next= head.next.next;
head.next.next = newitem;
newitem = new Node();
new item.Data = 88;
head.next.next.next.next.next = newitem;
Console.WriteLine(head.next.Data);