[iTzZh]

Код:

new UsernameString[MAX_PLAYER_NAME], WelcomeString[15 + MAX_PLAYER_NAME];
GetPlayerName(playerid, UserNameString, MAX_PLAYER_NAME);
format(WelcomeString, sizeof(WelcomeString), "Welcome %s!", UserNameString);
SendClientMessage(playerid, -1, WelcomeString);

That will welcome the user with their name in the message as well.