KatolaZ <kato...@freaknet.org> writes:
> On Thu, Dec 10, 2015 at 01:11:21PM +0100, aitor_czr wrote:
>> Hi Katolaz,
>>
>> In this case active_wifis is an argument passed by reference. So:
>>
>> active_wifis --> is the address
>> *active_wifis --> is the value
>>
>
> Aitor, sorry for being pedantic on this, but "passing-by-reference"
> exists only in C++, not in C. The only parameter passing in C is by
> value. Then, you can pass an argument that is a pointer to a variable
> instead of a variable, which "mimics" a pass-by-reference, but is
> still a pass-by-value.
>
> Hence, there is no way in C in which "p" and "&p" can be "the same
> thing", especially if you have to decide to use either "p" or "&p" as
> a first parameter of realloc...
There is, but not in a way which would make sense for realloc:
---------
#include <stdio.h>
static int vs[] = {1, 2, 3};
int main(void)
{
printf("%p\t%p\n", vs, &vs);
return 0;
}
---------
If we're already "being pedantic" :-)
_______________________________________________
Dng mailing list
Dng@lists.dyne.org
https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
