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Date Posted: 15:11:08 09/23/01 Sun
Author: faisal
Subject: Re: c++ builder 5 calculator
In reply to: Wayne 's message, "Re: c++ builder 5 calculator" on 13:02:14 07/03/01 Tue

>>wayne, i found your website looking for some c++
>>builder examples. i have to make a calculator using
>>c++ builder 5. I wanted to see if you can give me some
>>tips on how to do it, i saw the tutorial you have on
>>delphi, it helped me out, but i still have some
>>questions. i know about loops, arrays, etc. the basics
>>of any programming language, but have never worked
>>with object oriented languages, such as builder. if
>>you have any tips you could provide i would greatly
>>appreciate it.
>>thanks
>>dd
>
>Hi Desmond,
>
>I'm glad my Delphi Calculator has helped you a little
>bit. You will be surprised how similar it is to using
>C++ Builder, because they both use the same basic VCL
>(Visual Component Library).
>
>Basically, you should use buttons on the main form.
>Each button have numerous event handlers; these occur
>when an even on the button occurs. For example, when
>you click on a button, the OnClick event occurs.
>
>Therefore, in a calculator, the user is going to press
>these buttons a lot, to add, subtract, multiply etc.
>Each time a button is pressed the OnClick event is
>called, and you place your code there. My Delphi
>tutorial should present the main ideas of this.
>
>In the case of a calculator, just think of a real
>calculator in your hand. When you enter a number, what
>happens in the calculator? It's stored in a variable,
>which can then be worked on with other variables and
>arithmetic procedures. If you follow my tutorial, but
>change the syntax of the language, it will work fine.
>
>As for thinking in pure OOP, a calculator is not a
>very good modal. A good instance of an OOP modal would
>be an airport say, where there are 'airplanes',
>'pilots', 'airports', 'runways', 'passengers' and so
>on, each which are objects that can perform routines.
>
>Anyway, good luck!
>
>Write back if you need any more advice.
>
>Wayne Broadley
>Webmaster

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