[Luka P.]

pawn Код:

#define pClass(%1) GetPlayerSkin(playerid)==%1

I needed this.
You don't need anymore

pawn Код:

new plClass = GetPlayerSkin(playerid);
if(plClass == 100 || plClass == 200 || plClass == 300)

Now you can use

pawn Код:

if(pClass(100) || pClass(200) || pClass(300))
{
}

It is not so useful , but if you want to use it, go ahead