(This course is designed primarily to deal with the problem of sorting a lot of data, and there are many ways to sort this data. In this course design, the system development method is WindowsSeven, the programming language is C++, and the program running method is Windws98/2000/XP/Seven. In the program design, the method of combining switch sentence and file is adopted to realize the sorting of data. The program starts to realize the design scheme through debugging and running, and after proper improvement, it can be used to deal with the problem in practice.)