学生成绩管理系统设计

学生成绩信息包括：学号、姓名、C语言成绩。试设计一选修课程系统，使之能提供以下功能：

系统以菜单方式工作(用键盘输入1~4之间的数来选择功能)

(1)成绩信息录入功能(成绩信息用文件保存)

(2)成绩信息浏览功能

(3)查询功能：按学号查询或按成绩段查询(至少一种查询方式)

(4)成绩信息的修改:(按成绩修改，把55~59分之间的成绩都加上5分)-Student achievement management system

Student performance information includes: Student ID, name, C language achievement. Elective courses try to design a system so that it can provide the following functions:

System work the way the menu (using the keyboard a number between 1 to 4 to select the function)

(1) The performance information input function (performance information used to save the file)

(2) The results of information browsing

(3) check function: Search by Student ID or merit-based segment query (at least one query mode)

(4) The performance information on the changes: (based on merit revised to between 55 ~ 59 minutes the results were coupled with 5 points)