（1）分别采用结构体数组和链表存储学生信息（包括学号、姓名、各科成绩）

（2）通过键盘输入各学生的多门课程的成绩，建立相应的文件input.dat。

（3）按各科总成绩排序，并生成相应的文件输出。

（4）计算每人的平均成绩，按平均成绩排序，并生成文件。

（5）按学号、姓名查找学生记录。

-(1), respectively, and an array of linked list structures storing student information (including Student ID, names, subjects achievements) (2) through the keyboard input of all students in the multi-course results, the establishment of a corresponding document input.dat. (3) The total score of subjects sort, and generate the corresponding output file. (4) Calculate the average per capita results, sorted by grade point average, and generate the file. (5) by Student ID, name search for student records.