Storage for Statis Data members

[AkashAg]

Hi All, I want to know that when & where does the storage for static data members of a class is defined and what is it's life time. Since we don't need to create an object for assessing static members, does the storage is defined only by defining a class with static data members. Please let me know about the same ASAP. Thanks, Akash

[CPallini]

akashag wrote:

Since we don't need to create an object for assessing static members, does the storage is defined only by defining a class with static data members.

You've to explicitely define the static members of a class, once you've declared them inside the class.

akashag wrote:

Please let me know about the same ASAP.

Fast enough? :-D

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
[My articles]

[Lost User]

akashag wrote:

storage for static data members of a class

Since static members have to be available whether an object of the class exists or not, they are allocated in fixed program memory by the compiler. Thus they will be present during the lifetime of the program.

[santhosh padamatinti]

akashag wrote:

I want to know that when & where does the storage for static data members of a class is defined and what is it's life time.

Hi Akash, Static data members are having global scope comparing to local variables. The simple example for this is when ever you are trying to create a static variable inside a class it gives an error. That is the memory is allocated to class variables at run time. Where as memory allocation done at compile time in case of static variables. So when ever i am creating variable inside a class means I giving memory at run time, both the things are contradiction. A variable for that memory allocation done at only once called static variable.

sampath-padamatinti

[AkashAg]

Hi, Thanks for your answer. Between, I assume that by 'fixed program memory', you mean heap. Isn't it? Secondly, at what time storage for them is reserved? Rgrds, Akash

[CPallini]

akashag wrote:

etween, I assume that by 'fixed program memory', you mean heap

Why?

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
[My articles]

[Lost User]

akashag wrote:

Between, I assume that by 'fixed program memory', you mean heap. Isn't it?

No, I mean fixed program memory.

akashag wrote:

Secondly, at what time storage for them is reserved?

As I said before, at compile time. Static data whether global or class is allocated by the compiler, it is not dynamic (i.e. run time allocated).

[Lost User]

sampath-padamatinti wrote:

The simple example for this is when ever you are trying to create a static variable inside a class it gives an error.

What does this mean? It is quite correct to have static variables in a class: they are known as class variables.

sampath-padamatinti wrote:

That is the memory is allocated to class variables at run time.

No, class variables are allocated at compile time.

sampath-padamatinti wrote:

both the things are contradiction.

:confused: