连续几次#define同一个值是什么意思哦?也没有#ifdef之类的条件哈
#ifdef notdef
/* Some sample patterns. Allow programs only in one central directory: */
#define CGI_PATTERN "/cgi-bin/* "
/* Allow programs in a central directory, or anywhere in a trusted
** user 's tree: */
#define CGI_PATTERN "/cgi-bin/*|/jef/** "
/* Allow any program ending with a .cgi: */
#define CGI_PATTERN "**.cgi "
/* When virtual hosting, enable the central directory on every host: */
#define CGI_PATTERN "/*/cgi-bin/* "
#endif

[解决办法]
没问题的

只要分清楚哪些是c关键字就可以看懂了

notdef 只是一个标识吧了