采用C语言的文本函数设计的一个学生成绩管理系统，实现学生成绩的基本管理：插入、删除、查询、索引等功能，是C语言课程设计的良好例子。-Using C language, the text function is designed for a student achievement management system to achieve student performance in basic management: insert, delete, query, index and other f