>90
ん〜、エラーっすねぇ
Can't use string ("a.1") as a SCALAR ref while "strict refs" in use at /test.cgi line 16.

${"a$_"} にしたら
Can't use string ("a1") as a SCALAR〜
で同じエラー

俺にゃ難しい宿題だｗ