实现学生健康情况管理的几个操作功能（新建、插入、删除、从文件读取、写入文件和查询、屏幕输出等功能）。健康表中学生的信息有学号、姓名、出生日期、性别、身体状况等。-Achieving students in the health management of several operating functions (new, insert, delete, read from a file, write papers and check the screen output, etc). Healt