[alpha500delta]

with SSCANF + ZCMD:

pawn Код:

CMD:giveweapon(playerid,params[])
{
    new ID, GUN, AMMO;//Creates th variables
    if(sscanf(params, "uii", ID, GUN, AMMO)) return SendClientMessage(playerid,-1,"Usage: /giveweapon [gunid] [ammo]");//if the player enters the wrong params
    if(GUN == 0 || GUN >= 45) return SendClientMessage(playerid, -1, "Invalid gunid!");//if the gunid is invalid
    if(IsPlayerConnected(ID) && ID != INVALID_PLAYER_ID)//if the player is connected and is valid
    {
        GivePlayerWeapon(ID, GUN, AMMO);//Gives the GUN and AMMO specified
        SendClientMessage(ID, -1, "Someone gave you a gun!");//Sends a message to the player that they received a gun
    }
    return 1;
}

Note: Untested.