Re: extern variable assignment

Thanks Igor,


extern int i = 3;

1. Is it correct?

Yes, though keyword 'extern' serves no useful purpose here.

If it is both a declaration and a definition, does it violates the MSDN
extern documents -- which extern is used for declaration?

http://msdn2.microsoft.com/en-us/library/0603949d.aspx

--------------------
The extern keyword declares a variable or function and specifies that it has
external linkage (its name is visible from files other than the one in which
it's defined).
--------------------


regards,
George

"Igor Tandetnik" wrote:

"George" <George@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:414B7395-BA16-4826-86AC-109D4FA40586@xxxxxxxxxxxxx
Statement like this,

extern int i = 3;

1. Is it correct?

Yes, though keyword 'extern' serves no useful purpose here.

2. Is it definition or declaration?

Both.

Any special function or benefits
we could get compared with

extern int i;

This is a declaration but not a definition.

int i = 3;

This is the same as "extern int i = 3;" if the statement appears at
namespace scope. When in block scope, this statement defines a local
variable while the original statement is illegal.
--
With best wishes,
Igor Tandetnik

With sufficient thrust, pigs fly just fine. However, this is not
necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
overhead. -- RFC 1925



.

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