gb2312转unicode，自行查表，不依赖编译器库文件，C语言编写，多平台无须移植-The gb2312 turn unicode own look-up table, and does not depend on the compiler library files, C language, multi-platform without transplant

c++通过otl访问数据库的例子程序，包括对数据库表的增删改查-c++ otl access to the database through the example program, including the database tables CRUD