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What C++ Standard about this?

dh
Hi all,

int a = 1;

for(int a = 12; ...)
{
....
}

// Does value of a here have anything to do with "int a = 1;" scope, or the
"for" scope?

Thanks,
DH
Jul 22 '05 #1
2 1161
>Does value of a here have anything to do with "int a = 1;" scope, or
the
"for" scope?


The "a" in the for loop is in the scope of for loop alone and will not
have any effect on "a" before for loop.

Regards
Shan

Jul 22 '05 #2
dh wrote:
Hi all,

int a = 1;

for(int a = 12; ...)
{
....
}

// Does value of a here have anything to do with "int a = 1;" scope, or the
"for" scope?


The second 'a' has scope from it's declaration until the end of the for
loop, it 'hides' the first 'a' meantime. The first 'a' will be used ( if
at all ) either up until the for and/or after the closing brace of the
for. ( NB. It's legal but I think confusing practise to do this ).

--

Cheers
--
Hewson::Mike
"This letter is longer than usual because I lack the time to make it
shorter" - Blaise Pascal
Jul 22 '05 #3

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