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    Re: Celestial Navigation Software released
    From: Olivier Le Diouris
    Date: 2004 Mar 22, 08:57 -0800

    You're right Michael, the "choice" command is no longer available since
    Windows 2000...
    I'll include your snippet of code on the celestjava page.
    Thanks for the hint!
    
    - Olivier
    
    Michael Dorl wrote:
    
    > At 08:24 AM 3/8/04 -0800, you wrote:
    >
    >> Hi List,
    >>
    >> I'm new to this Navigation-L, and I joined it on the advice of Arthur
    >> Pearson, who has a very interesting web site about Lunar Distances.
    >> I have developed and implemented a bunch of algorithms for Celestial
    >> Navigation, in Java (that runs virtually on any platform), you can take a
    >> look at http://celestjava.sourceforge.net
    >> , it is free and open source, plus
    >> I wen through the validation smoke test this week-end, ... it seems
    >> to work
    >> fine!
    >
    >
    > When I try to run the celest.bat batch file, it loops trying to get
    > input from the user.
    >
    > The problem is that my Windows 98 DOS does not have a *set /P *switch
    > nor does in understand
    > the dos *if /I* switch.
    >
    > Below is a segment of the batch file with the *set /P* command
    > replaced with a *choice* command
    > and the */I *switch removed from the *if *commands.  I also had to
    > rem-out the line that tried to
    > reduce the string choice to one character; don't know why, maybe my
    > dos has no substring
    > capabilities. It now runs on my dos.  I guess the *choice* command
    > went away in newer dos
    > versions.
    >
    > BTW, here's a nice link concerning user batch file input
    > http://www.robvanderwoude.com/index.html
    > It's hard to believe that the original DOS provided no way of getting
    > input from the user.  I vaguely
    > remember writing such a command many years ago.
    >
    > echo ---------------------------------------
    > :: set /P prompts for input and sets the variable
    > :: to whatever the user types
    > set Choice=Q
    > rem set /P not functional in my dos
    > rem set /P Choice=Type the letter and press Enter:
    > choice /C:ABCDEFGHIJKLQ /N Type the letter and press enter:
    > IF ERRORLEVEL 1 SET Choice=A
    > IF ERRORLEVEL 2 SET Choice=B
    > IF ERRORLEVEL 3 SET Choice=C
    > IF ERRORLEVEL 4 SET Choice=D
    > IF ERRORLEVEL 5 SET Choice=E
    > IF ERRORLEVEL 6 SET Choice=F
    > IF ERRORLEVEL 7 SET Choice=G
    > IF ERRORLEVEL 8 SET Choice=H
    > IF ERRORLEVEL 9 SET Choice=I
    > IF ERRORLEVEL 10 SET Choice=J
    > IF ERRORLEVEL 11 SET Choice=K
    > IF ERRORLEVEL 12 SET Choice=L
    > IF ERRORLEVEL 13 SET Choice=Q
    > rem
    > :: The syntax in the next line extracts the substring
    > :: starting at 0 (the beginning) and 1 character long
    > rem if NOT '%Choice%'=='' set Choice=%Choice:~0,1%
    > echo.
    > :: /I makes the if comparison case-insensitive
    > if '%Choice%'=='A' goto ItemA
    > if '%Choice%'=='B' goto ItemB
    > if '%Choice%'=='C' goto ItemC
    > if '%Choice%'=='D' goto ItemD
    > if '%Choice%'=='E' goto ItemE
    > if '%Choice%'=='F' goto ItemF
    > if '%Choice%'=='G' goto ItemG
    > if '%Choice%'=='H' goto ItemH
    > if '%Choice%'=='I' goto ItemI
    > if '%Choice%'=='J' goto ItemJ
    > if '%Choice%'=='K' goto ItemK
    > if '%Choice%'=='L' goto ItemL
    > if '%Choice%'=='Q' goto End
    
    
    

       
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