函数功能：输入某班学生期末考试三门课程成绩函数参数：长整型数组num，存放学生学号整型数组score，存放学生成绩整型变量n，存放学生人数-Function: Enter a class final exam three course gradeFunction parameters: long integer array num store student student numberInteger array score, and storage of student achievementInteger variable n to store the number of students