Void Pointer

In what context?

Its been some time since I did any C programming but as I remember void *p declares a void pointer which can be used to point to the address of any other type of variable with appropriate casting. void q would declare a variable of the type void but as void is used to indicate that no variable is to be passed to/from a function then I doubt this would be a legal declaration and I can't think of any purpose for doing it.

I could be wrong on the second point

Al

It seems it's homework.

Incorrectly formulated question in any case.

(1) You have forgotten a brackets ( ).

(2) you should use either p, *p or q, *q. Otherwise every one can say you that p looks different of q.

Owing to (1) what's a point to find difference when both notations are wrong initially?

Study a textbook.

(1) You have forgotten a brackets ( ).

Brackets are not required when declaring a variable or a pointer. You seem to be suggesting that p or q is a function name

Hello Botton Alan!

VOID can declare only function with nothing to return. So brackets are needed there in any case for getting meaningful C statement and therefore question.

Other way it's nonsense at all. Are we discuss about C?

Try to declare variable this way void q; and look at compiler response.

Seems ours guest had got all tips for his/her question .

Caramba,

I no longer program in C or C++ but I distinctly remember declaring a pointer as type void

i.e. void *p

in order to pointer and access varying data types in a recordset returned by a sql database. Now that particular project was in C++ so maybe it was just a C++ thing

Al

Al,

You're right void *p will be passed by compiler I didn't write that it can't. Yes it may be cast any kind of integer or char variable at its address, though I use never this trick.

But I emphasize that we have here incorrect question.

All my kind regards and respect to you.

You stated:

VOID can declare only function with nothing to return

This is not true, as void can also be used to declare a void pointer. The fact that your compilere allows you to do that but not declare a variable of type void confirms both parts of my first post (feel free to rate it as a good answer).

Thanks for the feed back about your compiler

regards

Al

Electro,

A void pointer is a pointer capable of pointing to any area of memory occupied by a variable of any type as long as it is cast to that type when assigning it an address

Clear as mud?

Al