[Dutheil]

Firstly, to use mysql_tquery you can use only 2 arguments like this :

Code:

mysql_tquery(mysql, query);

Then, the problem came from the control character:

Code:

    `viplvl` = %d\ 
    WHERE `ID` = %d",

Compiles like that :

Code:

`viplvl` = %dWHERE `ID` = %d

So WHERE%d (or WHERE2 per exemple) isn't known by the language SQL, you need so to put a space character before your backslash.