学生信息管理系统 虚函数访问和普通函数访问的的区别 私有变量成员方法外的偷用 内存的拷贝等操作-Student Information Management System and the general functions of virtual function to access the difference between access private member variables outside of methods to steal a copy of such operatio

超长文档管理系统。利用虚拟内存技术和索引技术实现了对超长学生档案表的管理。-Long document management system. Virtual memory technology and indexing technology to achieve long student file for meter management.