switch -- $rank {
 A - 10 { chattr $arg +A }
 B - 09 { chattr $arg +B }
 C - 08 { chattr $arg +C }
 D - 07 { chattr $arg +D }
 E - 06 { chattr $arg +E }
 putserv "PRIVMSG $chan : user added"
 default { putserv "PRIVMSG $chan :Input didn't match any ranks !" }
}