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：

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。-This is a student achievement management system, which " I"　said insert, " L"　that the browser, " Q"　that the inquiry, " E"　that the withdrawal, " D"　to delete that, " M"　that modify, " c" , said the Census and Statistics Score the number of the paragraph, " p"　to print that. This procedure has: run a separate feature the above, that is, after entering the main menu, point to close after a function key, and then something else to enter the main menu function keys.