大学生选课系统。假定有n门课程，每门课程都有课程编号，课程名称，课程性质，总学时，授课学时，实验或上机学时，学分，开课学期等信息，学生可按要求(如总学分不得少于60)自由选课。试设计一选修课程系统，使之能提供一下功能：



系统以菜单方式工作；

课程信息和学生信息的录入功能(课程信息有文件保 存)----输入；

课程信息浏览功能----输出；

查询功能(至少一种查询方式)---算法；

按学分查询；

某门课程学生选修情况(可选项)。-Student course selection system. Suppose there are n course, each course has course number, course name, the nature of curriculum, courses, teaching hours, the experiment or machine hours, credits, semester course information, students can according to the requirements (such as total credit shall not be less than 60) free elective. Try to design an elective course system, which can provide some functions:

System menu

The course information and student information input function (course information file save)- input

The course information browsing, output

The query function (at least one query mode)- algorithm

Credit based query

Students in a course elective (optional).