这是一个学生成绩管理系统，其中“I”表示插入，“L”表示浏览，“Q”表示查询，

“E”表示退出，“D”表示删除，“M”表示修改,"c"表示统计各分数段人数,"p"表示打印.

本程序实现了：

（1）单独运行以上各功能,即在进入主菜单以后，点一功能键后关闭，再进入主菜单

点别的功能键。如运行"cjgl"文件后,在出现的主界面中点“I”，可插入数据，插入完

以后，关闭；在出现的主界面中点“M”，可修改数据，修改完以后关闭，用同样的方法

可运行其它的功能。

（2）连续运行部分的功能。

-This is a student achievement management system, in which "I", said insert, "L" that view, "Q", said query,

"E", said exit, "D", said to delete, "M" indicate a revision, "c" statistics of all scores of paragraphs that number, "p" says Print.

This program was realized:

(1) operates independently of the above features, namely, after entering the main menu, point after the closure of a function key, then enter the main menu

Point other function keys. Such as running "cjgl" file, in the event of the main interface, the mid-point "I", the data can be inserted, insert the end

After the closing　in the event of the main interface, the mid-point "M", can modify the data, revised after the closed end, using the same method

You can run other features.

(2) part of the function of continuous operation.