1、vc6.0 不支持using namespace std
vc6.0有sp6补丁，打过补丁后才支持。
2、C4786警告
解决方法: https://blog.csdn.net/liang_lq/article/details/6191996
3、警告: Compiler option 'Generate Browser Info' inconsistent with precompiled header;current command-line option will override that defined in the precompiled header”。
https://blog.csdn.net/u013929990/article/details/44498563
4、unexpected end of file while looking for precompiled header directive
https://zhidao.baidu.com/question/386961791.html
5、宏不支持可变参数
https://bbs.csdn.net/topics/260007879
6、vc 支持调用动态库
https://blog.csdn.net/wanghaihao_1/article/details/51097378
7、 _DllMain@12 already defined in LIBCMTD.lib(dllmain.obj)
https://blog.csdn.net/friendan/article/details/42126431
https://www.cnblogs.com/kex1n/archive/2010/01/19/1651407.html
8、window 遍历文件夹
https://www.cnblogs.com/collectionne/p/6792301.html
9、vc6.0添加头文件和库文件
http://blog.sina.com.cn/s/blog_9d3971af0102wxjq.html