可以从一个txt文件中读取出若干个学生的各科成绩，并且计算出每科的平均成绩。对学生的成绩进行排序，还可以显示出每科的最高分。并且可以生成txt文件把这些结果用储存起来。-It can read a number of students　grades in all subjects　a txt file, and calculate the average score for each subject. Sort on student achievement, but also can show the highest score for each subject.Besides

,it　can generate txt files to store theses results.