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From: Ioannis Vranos <ivr@remove.this.grad.com>
Newsgroups: comp.lang.ada,comp.lang.c++,comp.realtime,comp.software-eng
Subject: Re: [OT] Re: Teaching new tricks to an old dog (C++ -->Ada)
Date: Sat, 12 Mar 2005 21:28:22 +0200
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Date: 2005-03-12T21:28:22+02:00
List-Id: <comp.lang.ada>

Martin Krischik wrote:

> Well actualy: since 4 is not a valid value for the enum four_val the Ada
> compiler won't compile the code - Ada does not automaticy convert enums
> into integer.
> 
> The way you would do it in Ada is
> 
> pragma Assert (x'Valid);
> 
> The 'Valid attribute checks if a variable contains a valid value.


Now that I am thinking of it, isn't it a value range?


int main()
{
     enum four_val {a,b,c,d};

     four_val x;

     x = 4;
}


C:\c>g++ temp.cpp -o temp.exe
temp.cpp: In function `int main()':
temp.cpp:7: error: invalid conversion from `int' to `main()::four_val'

C:\c>


-- 
Ioannis Vranos

http://www23.brinkster.com/noicys