Visual FoxPro程序设计及其应用系统开发之发票信息管理系统-Visual FoxPro program design and applications development based on the invoice information management system

《Visual+C++打印编程技术与工程实践》一书的配套源码，包含:条形码、信封打印、打印发票、图片样例、打印简历、打印表格等。-" Visual+ C++ programming technology and engineering practice of printing," a book supporting source, including: barcode, envelope printing, print invoices, pictures, sample, p

完成一个Blackjack的纸牌游戏，主要是考察队类的继承等特性，但其中有个地方逻辑上存在问题，在此版本中是先调用发牌函数，然后在发牌函数只能够去查看是否满足发牌条件，但我认为，应该是先检查发票条件，再执行发牌函数，但后者实现步骤会比前者多-Complete a Blackjack card game, mainly expedition features such as class inheritance, but there was a place of logic problems, in