Нужна помощь по С

[GoodLooking]

int _RTLENTRY _EXPFUNC _ftscanf (FILE *fp, const _TCHAR *fmt, ...)
{
    va_list ap;
    int ret;

    va_start(ap,fmt);
    _lock_stream(fp);
    ret =  _scannert ( (int (*)(void *))_fgettc,
                     (void (*)(int, void *))_ungettc,
                     fp,
                     fmt,
                     ap);
    _unlock_stream(fp);
    va_end(ap);
    return (ret);
}