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实现大小写互换，即输入大写子母程序会自动转成小写子母(Realization case swap)

说明：  实现文本语音功能，将指定字符串转为语音。(text-to-speech )

VB将数据库导出到TXT文本文件中,有需要的就下载吧。(VB database export to TXT text file, there is a need to download it.)

生肖查询软件，小巧精致，原理很简单，初学者进入(Zodiac query software, compact, very simple principle, beginners to enter)

小型VB图片管理系统（Access）,有需要的就下载吧。(Small VB Image Management System (Access), there is a need to download it.)

VB sample code for NI-DAQ card.

Visual C下提取点阵字模源代码，可可直接生成C语言的code，可选字体，大小. (The dot matrix source code Visual C extract, cocoa directly generate C language code, selectable font, size.)

VB语音报数计算器源程序,有需要的就下载吧。(Talking Calculator VB source code, there is a need to download it.)

说明：  输入年份，判断是该年的那一天， 实现判断输入的正误！(Enter the year, is to determine the day of the year)

这是C++Primer的书籍的源代码，包括课后习题的答案，是份很不错的代码，尤其针对初学者(This is the source code of C++Primer books, including after-school exercises, answers, were very good code, especially for beginners)