[Jefff]

pawn Код:

GetPlayerSurname(playerid)
{
    new Nick[MAX_PLAYER_NAME + 1], pos;
    GetPlayerName(playerid,Nick,sizeof(Nick));
    if((pos = strfind(Nick,"_",true)) != -1)
        strdel(Nick,0,pos+1);

    return Nick;
}

SetPlayerSurname(playerid, const surname[])
{
    new Nick[MAX_PLAYER_NAME + 1], pos;
    GetPlayerName(playerid,Nick,sizeof(Nick));
    if((pos = strfind(Nick,"_",true)) != -1)
    {
        Nick[pos+1] = EOS;
        strins(Nick, surname, pos+1); // or strcat(Nick[pos+1], surname, sizeof(Nick));
        SetPlayerName(playerid, Nick);
    }
}