static void Main(string[] args)
{
SLinkList node1 = new SLinkList(1);
SLinkList node2 = node1.InsertNext(2);
SLinkList node3 = node2.InsertNext(3);
SLinkList node4 = node3.InsertNext(4);
SLinkList node5 = node4.InsertNext(5);
node1.Write(null);
node3.DeleteNext(); // delete the node "4"
node2.Write(null);
Console.ReadLine();
}
