Re: About C++ memory management

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If you want to properly maintain pointer aliasing, use smart
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--
=====================================
Alexander Nickolov
Microsoft MVP [VC], MCSD
email: agnickolov@xxxxxxxx
MVP VC FAQ: http://vcfaq.mvps.org
=====================================

"Kürþat" <xx@xxxxxx> wrote in message
news:OwdaQ0zGIHA.3600@xxxxxxxxxxxxxxxxxxxxxxx
Hi,

I have some questions about C++ memory management:

- I know that every pointer allocated by using new operator should be
deleted:

int * ptr = new int;
.
.
delete ptr;

But if I copy this pointer like below should I also delete copied pointer?

int * ptr = new int;
int * ptr1 = ptr
.
.
delete ptr;
delete ptr1;????

---------------------------------------------------
- Consider I have a class which have a pointer member which is supplied by
the caller :

class Foo
{
private:
int * m_ptr;
public:
Foo (int * ptr)
{
m_ptr = ptr;
}
}

Now let us see two situations :

A) int n;
Foo foo (&n);

B) int * ptr;
ptr = new int;
Foo foo (ptr)

In A, there is no need to delete passed pointer in the calss but in B
passed pointer should be deleted by the class, shouldn't it? If yes,how
can I know what type of allocation is made by the caller when I design
that class?

Thanks in advance.








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