CURLcode res;
CURL* Handle = curl_easy_init();

#include "curl/curl.h"

int TryLogin()
{
    if  ( ServerName == NULL || UserName == NULL || Password == NULL )
        return 0;

    Handle  = curl_easy_init();

    if  ( Handle == NULL )
        return 0;

    char info [ 150 ];
    sprintf_s   ( info, sizeof info, "ftp://%s/", ServerName );

if  ( curl_easy_setopt  ( Handle, CURLOPT_URL, info ) )
{
    curl_easy_cleanup   ( Handle );
    return 0;
}

sprintf_s   ( info, sizeof info, "%s:%s", UserName, Password );
if  ( curl_easy_setopt  ( Handle, CURLOPT_USERPWD, info ) )
{
    curl_easy_cleanup   ( Handle );
    return 0;
}

return 1;
}

int CreateDir( const char * dir )
{
    char info   [ MAX_PATH + 5 ];

    if (TryLogin())
    {
        curl_easy_cleanup( Handle );
        return 0;
    }

    sprintf_s( info, sizeof info, "MKD %s", dir );

curl_slist  * slist = NULL;
slist = curl_slist_append( slist, info );

if  ( curl_easy_setopt(Handle, CURLOPT_QUOTE, slist ) )
{
    curl_easy_cleanup   ( Handle );
    return 0;
}


res = curl_easy_perform ( Handle );
curl_slist_free_all     ( slist );
curl_easy_cleanup       ( Handle );

    if  ( res )
        return 0;

    return 1;
}

int main(int argc, CHAR* argv[])
{
    CreateDir("myfolder");
}