From: Bob <bob AT xnet DOT com>
Subject: TTY Flags
To: djgpp AT sun DOT soe DOT clarkson DOT edu
Date: Thu, 20 Apr 1995 15:35:49 -0500 (CDT)

i have a program where i allow redirecting of stdin/out but the reset either or
both for output at certain times to the screen [i realize that i could use
other output functions, but there's a reason that i can't remember offhand]

under Borland C, i used the flags field of the FILE *stdin/stdout.  i could
bitwise or certain bits to see if the stream was a TERMINAL or not.  then i
could reopen the console/terminal for output directly when i needed to.

i looked at the _flag field of gcc's FILE *, but it doesn't seem to work the
same.  is there another way to check if output is to the screen/input from the
keyboard?

thanx,

bob
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