这是关于学生成绩管理的程序，实现功能：输入、输出、插入、删除、查找、追加、读入、显示、保存、拷贝、排序、索引、分类合计、退出。-This is on student achievement management procedures, to achieve functions: input, output, insert, delete, find, additional, read, display, save, copy, sort, index and classification together, to withdraw from.