本实验是完成对很多记录的学生成绩表进行计算，排序和统计等功能。

程序操作说明

程序进入后是一个选择问题，要求用户选择排序方式，共有四种排序方式，具体是：三科成绩和平均分。其代号也在提示中给出。选择后程序将给出排序结果，然后用户要选择是否要进行另一种排序，程序将完成用户给定的要求。如果不用进行另外的排序，程序将直接进入成绩统计子程序，输出统计结果并结束程序。

-completion of this experiment is to record the many accomplishments of students table, sorting and statistical functions. Procedures and operating procedures into the note after a matter of choice, ask the user to select Sort, a total of four ranking, Specifically : three subjects and average hours. Also suggest their code is given. Selection procedure will be given after the results of sequencing, then users must choose whether to conduct another ranking procedures will be completed to the user requirements. If not for the other sort, procedures will directly enter the scores subroutine, and the output results and conclusion of proceedings.