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GUEST, unregistred user!
我有这么一段程序（Qbasic)，但执行不了，提示是 Bad file name .这是为什么？
OPEN "COM1:1200,N,8,2,CS,CD DS" FOR INPUT AS #1
FOR I = 1 TO 50
INPUT #1, A$
PRINT A$
NEXT I
CLOSE #1
END
OPEN "COM1:1200,N,8,2,CS,CD DS" FOR INPUT AS #1
FOR I = 1 TO 50
INPUT #1, A$
PRINT A$
NEXT I
CLOSE #1
END