VC++ 用户登录程序，主要演示如何在VC++环境操作使用Access数据库，并进行数据读取和判断，因为这种数据库互动实例非常有用，经常用到，所以就以这个演示给VC++新手们。-The VC++ user login process, the main demonstration how to use an Access database operation in VC++ environment, and data read and judge, because the interaction is very useful examples of such databases, frequently used, so this demo to VC++ novices.