Well, I decided that I would post a question and ask for comments. The question is
In the programming language "C", how many times can you take the address of a variable v? So if v is a variable can I use &v, &&v, &&&v, etc? What is the limit to taking addresses?
I think I know the answer and it seems straight forward. Once, I get comments, I will try and illustrate the answer
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6 comments:
Gops had the correct answer. Once!
Indirectly you can do something like this :-
int i;
int *j;
int **k;
and so on;
&i
j=&i;&j
k=&j;&k and so on
Yes, thats correct. But the fact than you can take one address at a time still remains. To give a simple answer
& is the address operator
&& is the and operator
Won't it be infinite if use paranthesis, thusly : &(&(&(&var))) ?
-Vinay
Yes, Vinay, good point. We can use &(&a)), etc. But &(&(...)) is not a common operation as common as **...
For a given variable a on &a exists.
If int *p = &a, then &(&a) is not &p since "C" has no way of knowing all variables that could contain a pointer to a.
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