非递归中序遍历二叉树：要求从键盘输入二叉树各结点的值，并使用二叉链表来存储二叉树；使用非递归算法遍历二叉树，在屏幕上打印出二叉树中序遍历序列。-Non-recursive traversal of binary tree: the input binary tree node value from the keyboard and use the binary tree to store binary tree　non-recursive algorithm for binary tree traversal, print out the binary tree traversal sequence on the screen.