采用llink-rlink方式存储二叉排序树，编写能够通过键盘输入建立二叉排序树，并在建立完立即在屏幕显示中序遍历结果的程序。-Stored using llink-rlink binary sort tree, the preparation of the keyboard input through the establishment of binary sort tree, and build complete immediately display the results of the