学生考试成绩统计管理系统编写程序完成某班学生考试成绩的统计管理，包括成绩输入函数、成绩显示函数， 并计算每位同学的总分、平均分，对成绩排名输出-Examination score statistics management system for the preparation of procedures for students to complete a test score statistics management, including input function score, sc