二叉排序树的构建，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。-Construction of binary sort tree, using llink-rlink stored binary sort tree, the preparation can be established through the keyboard input binary sort tree, and immediately in the establishment of complete traversal of the screen displays the results of the program.