[Scenario]

This is a really crappy command that I threw together in a minute. You'll probably want to change it up a little and add some checks!

pawn Код:

CMD:sellweapon(playerid, params[])
{
    new iTar, iWeap, iPrice;
    if(sscanf(params, "rii", iTar, iWeap, iPrice))
        return SendClientMessage(playerid, COLOR_WHITE, "SYNTAX: /sellweapon [nick/id] [weapon ID] [price]");
    if(iTar == INVALID_PLAYER_ID)
        return SendClientMessage(playerid, COlOR_RED, "ERROR: You entered an invalid nickname/ID.");

    GivePlayerMoney(playerid, iPrice);
    GivePlayerMoney(iTar, -iPrice);
    GivePlayerWeapon(iTar, iWeap);
    return 1;
}