说明：  使用C语言实现学生成绩统计分析管理统，包括增加、删除、修改学生信息；计算学生平均分总分名次、总平均分、单课平均分、输出学生名次表成绩表、划分总分分数段计算百分比等。
(The use of C language to achieve statistical analysis of student achievement management system, including add, delete, modify student information calculation of average scores of students ranking, with a total average score, single-class average, the output performance of students ranking table, divided into paragraphs Total Score Calculation percentage.)