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Programming > C++ Moderated > Re: Nested vari...
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Re: Nested variable declarations using the same name

by Ulrich Eckhardt <eckhardt@[EMAIL PROTECTED] > Apr 23, 2008 at 02:13 PM

siliconmunky@[EMAIL PROTECTED]
 wrote:
> int a = 0;
> 
> if( some_bool )
> {
>      int a = 5;
>      ...
> }
> 
> cout << a;  //this outputs 0
> 
> 
> I can't think of a reason why this would be sup****ted, and I feel the
> compiler should throw a warning. So, is there a good useful reason to
> allow this?

Yes, in particular reusing the same name for loop variables. Of course,
that
is only for reuse in the same function, for globals it makes even more
sense because your code shouldn't change its meaning when someone adds a
global with a similar name.

Uli

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Geschäftsführer: Michael Wöhrmann, Amtsgericht Hamburg HR B62 932


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 9 Posts in Topic:
Nested variable declarations using the same name
siliconmunky@[EMAIL PROTE  2008-04-22 22:19:30 
Re: Nested variable declarations using the same name
"Hakusa@[EMAIL PROTE  2008-04-23 13:11:04 
Re: Nested variable declarations using the same name
Tony Delroy <tony_in_d  2008-04-23 13:13:18 
Re: Nested variable declarations using the same name
Francis Glassborow <fr  2008-04-23 13:21:47 
Re: Nested variable declarations using the same name
"Bo Persson" &l  2008-04-23 13:23:52 
Re: Nested variable declarations using the same name
Chris Uzdavinis <cuzda  2008-04-23 13:28:29 
Re: Nested variable declarations using the same name
=?UTF-8?B?RXJpayBXaWtzdHL  2008-04-23 13:28:16 
Re: Nested variable declarations using the same name
Ulrich Eckhardt <eckha  2008-04-23 14:13:18 
Re: Nested variable declarations using the same name
Seungbeom Kim <musiphi  2008-04-24 15:13:18 

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