[Konstantinos]

Only the one:

pawn Код:

CMD:cw(playerid, params[])
{
    if(gPlayerLogged[playerid] == 0) return SendClientMessage(playerid, COLOR_GREY, "   You havent logged in yet!");
    if(!IsPlayerInAnyVehicle(playerid)) return SendClientMessage(playerid, COLOR_GREY, "   You are not in a car!");
    if(PlayerInfo[playerid][pMuted] == 1) return SendClientMessage(playerid, TEAM_CYAN_COLOR, "You cannot speak, you have been silenced");
    if(isnull(params)) return SendClientMessage(playerid, COLOR_GRAD2, "USAGE: (/cw)hisper [text]");
    new vehicle = GetPlayerVehicleID(playerid);
    for( new i = 0; i != MAX_PLAYERS; i++ )
    {
        if(IsPlayerConnected(i) && IsPlayerInVehicle(i, vehivle))
        {
            new sendername[MAX_PLAYER_NAME];
            GetPlayerName(i, sendername, MAX_PLAYER_NAME);
            if(GetPlayerState(playerid) == PLAYER_STATE_DRIVER) format(string, sizeof(string), "Driver %s Says: %s", sendername, params);
            else format(string, sizeof(string), "Passenger %s Says: %s", sendername, params);
            SendClientMessage(i, 0xD7DFF3AA, string);
            new y, m, d;
            new h,mi,s;
            getdate(y,m,d);
            gettime(h,mi,s);
            format(string,sizeof(string), "(%d/%d/%d)[%d:%d:%d] %s [CMD] -> /carwhisper %s",d,m,y,h,mi,s,result);
            ChatLog(string);
        }
    }
    return 1;
}

CMD:carwhisper(playerid, params[])
{
    return cmd_cw(playerid, params);
}

CMD:cwhisper(playerid, params[])
{
    return cmd_cw(playerid, params);
}

See how I converted it and try the other one. Read some tutorials too, that's how you'll learn.