Re: Need Help On Ada95 Problem

[BrianG <me@null.email>]

On 02/08/2012 09:01 PM, Shark8 wrote:
> On Feb 8, 7:03 pm, Will<willmann...@gmail.com>  wrote:
>> I am new to Ada and need help on an exercise for school.  Can anyone
>> help.  The problem is as follows ( you can skip all the build up
>> background A Christmas Story references):
>>
>> Problem 1: Secret Decoder Ring
...
>>       number wheel ->      0  1  2  3  4  5  6  7  8  9
>>       letter wheel ->      U  R  O  V  A  L  T  I  N  E
>>
>> So, for example, Randy encrypts the PIN 9537 as ELVI.
>>
>> Complete the function Encrypt(PIN) that takes a 4-digit PIN (as a
>> string) and returns the corresponding 4-letter code (also as a
>> string).
>>
>> Note: It would be possible to convert digits to letters using a giant
>> IF statement, but don't do this. Instead, the letter wheel is given to
>> you as a string, so use each digit to read the appropriate letter from
>> the string.
>
> Alright this is actually a simple problem; there are several ways to
> go about this,
> but let's play to Ada's strengths and use types.
>
...
> Reading the problem the note says:
> It would be possible to convert digits to letters using a giant
> IF statement, but don't do this. Instead, the letter wheel is given to
> you as a string, so use each digit to read the appropriate letter from
> the string.
>
> Meaning that they're hinting strongly that you use the CASE statement.

I don't see why this would require either an if or a case.

-- 
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BrianG
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