CURL *curl;
CURLcode res;
std::string readBuffer;

char username[] = "Username=Admin&Password=12781278";

curl_global_init(CURL_GLOBAL_ALL);

 /* get a curl handle */
 curl = curl_easy_init();

 if(curl) {

     curl_easy_setopt(curl, CURLOPT_URL, "http://www.mywebsite.com/app/Test.php");
     curl_easy_setopt(curl, CURLOPT_POSTFIELDS, username);
     curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
     curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer);
     res = curl_easy_perform(curl);

             // Check for errors
             if (res != CURLE_OK)
                 fprintf(stderr, "curl_easy_perform() failed: %sn",
                     curl_easy_strerror(res));

             //always cleanup
             curl_easy_cleanup(curl);


         }
         curl_global_cleanup();
         return 0;
}