need help converting php curl code to C language -

my service provider has given me following piece of php code accessing service. need in converting c lang code use in application. code using curl module post on site. pls advise.

<?php $ch = curl_init();  curl_setopt($ch,curlopt_url,  "http://api.mvaayoo.com/mvaayooapi/messagecompose?user="myusername":"mypassword"&senderid=test sms&receipientno="phonenum"&msgtxt=this test mvaayoo api&state=4");  curl_setopt($ch, curlopt_returntransfer, 1); curl_setopt($ch, curlopt_post, 1); curl_setopt($ch, curlopt_postfields, "user=$user&senderid=$senderid&receipientno=$receipientno&cid=$cid&msgtxt=$msgtxt");  $buffer = curl_exec($ch);  if(empty ($buffer)) { echo " buffer empty "; } else { echo $buffer; } curl_close($ch); ?> 

use libcurl it's c-interface. remainer old c-style-string-handling.