[prog] [C] strings bug
jching at flex.com
Fri Apr 11 00:19:20 EST 2003
On Fri, 11 Apr 2003, Dan Richter wrote:
> int a();
How do you know whether this is a function prototype declaration or a
variable declaration? According to the ANSI C++ standard, this is a
function prototype declaration. I.e. 'a' is a function taking void, and
> int* p = new int();
This is valid, and GCC 2.95.4 handles it just fine.
>I would also note that, with the GCC, all ints allocated using "new" are
>automatically initialized to zero.
Only for the case of:
int *i = new int();
which calls the default constructor, which sets the variable to zero.
Without the parenthesis, the returned memory is uninitialized. See
section 8.5 of ISO/IEC 14882.
>But let me finish by saying that depending on automatic intialization is
>a really bad idea.
C++ gives you a rope to shoot your leg off. But if you know how to use
Jimen Ching (WH6BRR) jching at flex.com wh6brr at uhm.ampr.org
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