help in my code,rank const char* id; please

        extern int account_get_ladder_rank2(t_account * account, t_clienttag clienttag, const char* id)

        {        
            if (!clienttag)
            {
            eventlog(eventlog_level_error,__FUNCTION__,"got bad clienttag");
            return 0;
            }
            
            std::string key("Record\\" + tag_uint_to_str2(clienttag) + "\\" + (const_cast <const char*>(id)) + "\\rank");

            return account_get_numattr(account, key.c_str());
        }