[.FuneraL.]

pawn Код:

public OnPlayerConnect(playerid)
{
     new String[128], IP[20], Nome[24];
     GetPlayerName(playerid, Nome, sizeof(Nome));
     GetPlayerIp(playerid, IP, sizeof(IP));
     format(String, sizeof(String), "[Login]: %s Logou no Servidor com o IP: %s", Nome, IP);
     for(new i = 0; i < MAX_PLAYERS; i++)
     {
          if(IsPlayerAdmin(i))
          {
               SendClientMessage(i, -1, String);
          }
      }
      return 1;
}

Tenta Assim