need help converting php curl code to C language

my service provider has given me following piece of PHP code for access开发者_高级运维ing his service. I need help in converting to C lang code for use in my application. The code is using curl module to post on to a 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 is a test from 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 is empty "; }
else
{ echo $buffer; }
curl_close($ch);
?>

Use libcurl with it's C-interface. The remainer is good old C-style-string-handling.

Your example libcurl program in the comment looks good, except that for a POST you need to install a CURLOPT_READFUNCTION, not a CURLOPT_WRITEFUNCTION. But if you just want to post a static buffer, use CURLOPT_POSTFIELDS instead of a callback function.