[TheToretto]

The code provided by @MSC won't work properly, as if you change the variable's value, it will be given to the whole server's players. As they are not per-player variables. Plus could easily avoid one variable per job, and declare an array.

Код:

enum
{
    Farmer,
    Lumberjack,
    Miner,
    Unemployed
};

new PlayerJob[MAX_PLAYERS];

public OnPlayerConnect(playerid)
{
    switch(PlayerJob[playerid])
    {
        case Farmer: SetPlayerColor(playerid, -1);
        case Lumberjack: SetPlayerColor(playerid, -1);
        case Miner: SetPlayerColor(playerid, -1);
        case Unemployed: SetPlayerColor(playerid, -1);
    }
    return 1;
}