一个可以展开和缩放的菜单，其中用到了树的数据结构，很值得入门选手学习-A start menu and zoom, which uses a tree data structure, it' s worth learning portal

绘制多条曲线,实时显示, 绘制多条曲线,实时显示-show many lines ,show many lines zoom ,show many lines zoom,show many lines zoom,show many lines zoom

C语言图像如何放大。首先读取要放大的区域的图像信息，然后利用矩阵的repmat变换对矩阵进行拉伸。本程序可以对图像实现放大功能。-C language image to enlarge. First reading area to zoom the image information, and then use matrix repmat transform matrix stretching. This program can achieve the image magnification.

汉诺塔：汉诺塔（又称河内塔）问题是源于印度一个古老传说的益智玩具。大梵天创造世界的时候做了三根金刚石柱子，在一根柱子上从下往上按照大小顺序摞着64片黄金圆盘。大梵天命令婆罗门把圆盘从下面开始按大小顺序重新摆放在另一根柱子上。并且规定，在小圆盘上不能放大圆盘，在三根柱子之间一次只能移动一个圆盘。-Tower of Hanoi: The Tower of Hanoi (also known as Tower of Hanoi) is derived from an ancient Indian le