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From: dewar@merv.cs.nyu.edu (Robert Dewar)
Subject: Re: Simple ADA/C Question
Date: 1997/02/27
Message-ID: <dewar.857057716@merv>#1/1
X-Deja-AN: 221849854
References: <Pine.LNX.3.95.970225100418.10492A-100000@vf700f.msfc.nasa.gov>
Organization: New York University
Newsgroups: comp.lang.ada
Date: 1997-02-27T00:00:00+00:00
List-Id: <comp.lang.ada>


AE asks

<<I am very new to ADA ( 3-4 days experience ) and I have a question that
probably has a simple answer.  As part of my learning experience, I wrote
a simple piece of code that requests the user to enter an integer and then
the integer is displayed.  My ADA code calls a C function, which requests
and then returns the integer.  The primary ADA task consists of a loop so
the I can go get as many integers as I want as long as I input 'y' when
prompted ( the default is no ).  This works fine as long as I enter an
integer. If I enter a real, the program exits as if I had hit the default.
What am I forgetting to check to prevent a real, or any unexpected value,
from having this effect?  TIA.>>

your design is defective, to accept any character other than y as a
terminating character is a bad idea. In this case, the character read
is the period (if you input 21.35, the get of an integer will read only
the 21), and your program is working exactly as you intend (only though
I don't think you exactly intended this effect :-)