[Yashas]

Something like this will do
This gets the skin ID and puts it in a switch and the skin ID is checked if it matches,if it does then a check on the players team is done to see if the player can use that skin if not a message is shown.And if he hits Spawn with the wrong skin id a check is once again done on OnPlayerSpawn and is forced a class selection again to select another skin.

Код:

public OnPlayerRequestClass(playerid, classid)
{
	TextDrawHideForPlayer(playerid, CSTailText);
	TextDrawHideForPlayer(playerid, CSTailExtra);
	TextDrawShowForPlayer(playerid,CSScreenText);
	
	PlayerPlaySound(playerid,1183,-86.2111,-224.1556,80.1250);
	
	/* You pos,etc stuff go here*/

	PlayerInfo[playerid][Skin] = GetPlayerSkin(playerid);
	switch(PlayerInfo[playerid][Skin])
	{
		
		case 280,281,282,283,284,285:
		{
                        if(PlayerInfo[playerid][Team] != COP) return ShowTextMessage(playerid,"You can't use this class");
			ShowTextMessage(playerid,"~b~COPS");
			//COPS
		}
		
		case 275,276:
		{
                         if(PlayerInfo[playerid][Team] != MEDIC) return ShowTextMessage(playerid,"You can't use this class");
			ShowTextMessage(playerid,"~p~MEDIC");
			//MEDIC
		}
		case 264,211,217,204,187,26,81,23,82,77,66,30,29,249,224,181,195,194,198,33,197,251:
		{
                       if(PlayerInfo[playerid][Team] != COP) return ShowTextMessage(playerid,"You can't use this class");
			ShowTextMessage(playerid,"~w~Civilian");
			// CIVIL
		}
	}
	return 1;
}

and OnPlayerSpawn if he presses Spawn with the wrong skin then ForceClassSelection(playerid) and kill the player(I dont know if the kill is required)

Код:

public OnPlayerSpawn(playerid)
{
        switch(PlayerInfo[playerid][Skin]
        {
                 case 275,276:
                {
                        if(PlayerInfo[playerid][Team] != MEDIC) { ForceClassSelection(playerid); SetPlayerHealth(0); return 1; }//Not sure if kill is required
                }
        } 
}

There might be much better optimized way, I just gave an idea how it can be done.