定义一个结构体数组，存放10个学生的学号，姓名，三门课的成绩，输出单门课成绩最高的学生的学号、姓名、以及该门课程的成绩，输出三门课程的平均分数最高的学生的学号、姓名及其平均分，将10个学生的相关数据，存入文件中，再从文件中读出，按照平均分数从高到低进行排序，分别将结果输出到屏幕上和另一文件中，再从文件中读取第 1 ，3 ， 5 ，7， 9个学生的数据。-Define an array of storage structure of ten students and student id, name, three classes scores the highest scores, ChanMen output of student id, name of the students, and the course grades, the average output of three courses of the highest scores of students and the average student id, name, 10 students in the relevant data and documents, then read from the document, according to the average score from high to low ranking, will output to screen and another file, then read from 1, 3, 5, 7, and nine students of data.