sending mail using cgi written i c/c++ ?

Hi all.

Has anyone some information on how to create the code (c++) for sending email? I want to write a cgi program that recieves data from a form on the web (html or pdf) and then sends an email to the user?

I need help with sending a mail using a cgi program written in c/c++.

Is there any example on the net that shows how this could work?

Thanks in advanced
/Martin