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Path: utzoo!watmath!clyde!burl!ulysses!gamma!pyuxww!pyuxv!craig
From: craig@pyuxv.UUCP
Newsgroups: net.micro.apple
Subject: ProDOS READ/WRITE GET/PRINT?
Message-ID: <141@pyuxv.UUCP>
Date: Thu, 12-Sep-85 14:29:54 EDT
Article-I.D.: pyuxv.141
Posted: Thu Sep 12 14:29:54 1985
Date-Received: Fri, 13-Sep-85 04:44:35 EDT
Organization: RB Craig @ Bellcore, Piscataway, NJ
Lines: 33

In Applesoft BASIC on my Apple //eE (ProDOS 1.1.1)
I have been unsuccessfully trying to read TXT characters
from one Disk file apply a little logic, and write the
transliterated characters to another Disk file.  What's
the glitch?  For example:  [D$ = CHR$(4)]

     PRINT D$;"OPEN <in file>"
     PRINT D$;"READ <in file>"
     GET C$
     [check and possibly translate]
     PRINT C$;
     [loop back to GET until EOF]
     [on EOF CLOSE file(s)]

The above works as expected; prints the TXT file to
the screen just fine.

If   PRINT D$;"OPEN <out file>"
     PRINT D$;"WRITE <out file>"
is added ahead of the GET statement, the program only
responds to C$'s entered on the keyboard.  It's as if
the OPEN/READ, which previously worked, is ignored due
to the addition of OPEN/WRITE.  Characters entered on
the keyboard are buffered and eventually written to
the <out file>.  I have seen no prohibition of this 
READ/WRITE GET-PRINT in the manuals.  Am I missing
a simple workaround, short of Assembler routine(s).
It's not another bug in ProDOS, surely.
- - - - - - - - - - - - - - - - - - - - - - -
..!ihnp4!pyuxv!craig (RB Craig @ Bell Communications Research)
                                 Piscataway, NJ  08854-1300
If you don't like what you see,
you may need to learn to like more things.