打印如下规律的螺旋矩阵，尽管存在求数值规律的方法，但本代码的方法更为基本和通用。vc++ 2005环境。 1 2 9 10 25 4 3 8 11 24 5 6 7 12 23 16 15 14 13 22 17 18 19 20 21 -Print the following laws of the spiral matrix, despite the existence of the law for numerical methods, but this code

一个很好的二叉树的程序，可以在vc++6.0环境下执行，可以创建，先序，中序，后序遍历，还可以输出树的叶子节点，按树状打印该二叉树-A good binary tree program, you can run under vc++6.0, you can create, the first order, in order, after traversing, you can output the tree leaf node, print the binary tree by tree