这是我用空闲时间自己写的一个C语言的学生成绩管理系统，用户密码可以在文档中查看，这类代码网上很多，欢迎互相学习！-This is my free time to write a C language student achievement management system, the user password can be viewed in the document, such code online a lot, welcome to learn from each other!