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NNTP-Posting-Date: Sat, 29 Jan 2005 15:03:23 -0600
From: tmoran@acm.org
Newsgroups: comp.lang.ada
Subject: Re: Input a string (again)
References: <36119gF4r0h1aU2@individual.net>
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Date: Sat, 29 Jan 2005 15:03:23 -0600
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Xref: g2news1.google.com comp.lang.ada:8073
Date: 2005-01-29T15:03:23-06:00
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> After I'm now able to input a string (30 chars),
> ...
>         Get_Line(sString, iString_Length);
> ...
>         return sString;
  "Get_Line" really ought to be renamed "Read_Into_Buffer" or something.
Don't think of sString as your input string, think of it as a buffer
that will hold up to 30 characters of input.  The actual string typed
in by the user is in the first iString_Length positions in the buffer,
so sString(1 .. iString_Length) is the typed input.
  BTW, in Ada strings don't necessarily have to start with an index
of 1.  For instance, a procedure might be called with a string parameter
which is position 5 .. 10 of some larger string.  So it's safer to be
in the habit of not assuming a start index of 1.  Thus you should have:
          Get_Line(sString, iString_Last);
and
          return sString(sString'first .. iString_Last);