How can I get request information when run as cgi in apache?

Never used cgi before, always being a PHP guy,in which I can simply get the request information as easy as $_REQUEST.

开发者_如何学Go

How can I supposed to get it in c?

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The CGI standard

http://docstore.mik.ua/orelly/linux/cgi/ch03_01.htm

One of many CGI libraries in C

http://cgi-c.sourceforge.net/