链表结点二叉树实现,通过建立树和遍历树,真正实现二叉树的树状显示,根结点在最上面,用c实现,通过计算结点位置放置结点.需要的可以参考!-Binary Tree node list, through the establishment of trees and tree traversal, binary tree truly show the root node at the top, with c achieved by calculating the node position to pla