这是偶们学校Ｃ语言最后的作业！！虽然内容不大，但包含了所学最基本的东东～-This is the final C-language schools operating! ! Although not content, but contains the basic science of the Eastern ~

以前的C语言大作业,C环境的下拉菜单的设计.-previous C language major operations, the C environment drop-down menu design.