支付宝线下支付C#2010WINFORM实例及官网DEMO

vxworks下bdb程序，包含连接数据库、插入、查找、删除等操作(bdb procedures under vxworks, including connecting to the database, insert, search, and delete)

说明：  登录RTK差分服务器，获取差分数据，用于gps高精度定位(Log in to RTK differential server)

封装了windows操作串口的几个API（CreateFile， ReadFile，WriteFile，SetComState）。串口的读写设置这几个操作都可以简单地只用关键一两个参数就能实现操作。也是一个很好的例子，我写这个之前查了不少资料，感觉非常麻烦，索性发出来给新手们作个样例(Windows serial COM port access class，it includes CreateFile, SetComState，ReadFile，WriteFile，CloseFile)

VC++,利用线程技术开发的文件复制工具，对于复制难读的VCD光盘中的硬盘特别有效(也是为此目的而开发,因为在盘片有错误时,WINDOWS会无法复制,这种错误往往会出现在文件的末段).(VC, the use of threaded technology development tools for the reproduction of documents. For hard copy of the VCD reading the hard disk particularly effective (for this purpose as well as development, because of an error in the disk, Windows will be impossible to reproduce, such mistakes will always be in the last paragraph of the document).)

? 快速实现客人入住登记和账务处理，减少客人住店及离店时的等待时间； ? 准确实现客人预定入住的要求，实现有效及有保障的前台系统作业 ? 快速响应住宿客人的有关项目查询要求； ? 实现入住、消费、结账一条龙服务，方便客人在店内的各类消费要求； ? 提供清晰、准确的各类明细报表、账单、给客人留下良好的管理印象(Quickly realize guest check-in and account processing, reduce waiting time for guests to stay and leave the hotel; Accurate realization of guest booking requirements and effective and secure operation of the front desk system Quickly respond to the inquiry requirements of accommodation guests; To realize the one-stop service of check-in, consumption and checkout, so as to facilitate the various consumption requirements of customers in the shop; Provide clear and accurate detailed reports, bills and impressions of management.)

说明：  五子棋实现人机对战，利用危害对进 行优先级计算(renju achieve human-machine players, for use against right-priority calculation)

工程电磁场导论_(冯慈璋_马西奎_著)_课后答案.pdf

模拟终端，和几种目录文件操作的系统命令，dir,cd,md,del等(analog terminal, and several catalog operation of the system commands, dir, cd, md, del etc.)

通过C#通过的类获取系统/硬件信息 

说明：  计算机二级中C语言部分的上级编程题目及答案(Computer level 2 C programming)