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Groups > comp.lang.c > #142572

Re: Array-as-pointer Syntax

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On 2019-03-28, James Kuyper <jameskuyper@alumni.caltech.edu> wrote:
> On Thursday, March 28, 2019 at 1:23:26 PM UTC-4, Ian Collins wrote:
>> On 29/03/2019 06:04, David T. Ashley wrote:
>> > Given:
>> > 
>> >    int x[1000];
>> > 
>> > what is the difference between:
>> > 
>> >     memset(x, 0, sizeof(x));
>> > 
>> > and
>> > 
>> >     memset(&x, 0, sizeof(x));
>> > 
>> > I would think there is NO difference, but I might be missing something ...
>> 
>> Check for yourself!
>> 
>> #include <stdio.h>
>> 
>> int main()
>> {
>>    int x[111];
>>    printf( "%p %p\n", x, &x);
>
> Not quite correct. When you pass a %p format specifier to printf(), "The
> corresponding argument "shall be a pointer to a pointer to void."
> (7.21.6.2p12).

I think the pointer-to-pointer-to-void is  for *scanf.
For *printf it's pointer-to-void.

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Array-as-pointer Syntax "David T. Ashley" <dashley@gmail.com> - 2019-03-28 10:04 -0700
  Re: Array-as-pointer Syntax Bart <bc@freeuk.com> - 2019-03-28 17:18 +0000
    Re: Array-as-pointer Syntax David Brown <david.brown@hesbynett.no> - 2019-03-28 21:31 +0100
  Re: Array-as-pointer Syntax Ian Collins <ian-news@hotmail.com> - 2019-03-29 06:23 +1300
    Re: Array-as-pointer Syntax James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-03-28 12:09 -0700
      Re: Array-as-pointer Syntax Ian Collins <ian-news@hotmail.com> - 2019-03-29 08:21 +1300
      Re: Array-as-pointer Syntax Ike Naar <ike@iceland.freeshell.org> - 2019-03-28 22:59 +0000
        Re: Array-as-pointer Syntax James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-03-28 17:44 -0700
    Re: Array-as-pointer Syntax Ben Bacarisse <ben.usenet@bsb.me.uk> - 2019-03-28 20:12 +0000
  Re: Array-as-pointer Syntax James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-03-28 11:57 -0700
    Re: Array-as-pointer Syntax Keith Thompson <kst-u@mib.org> - 2019-03-28 13:57 -0700
      Re: Array-as-pointer Syntax James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-03-28 19:50 -0400
  Re: Array-as-pointer Syntax Keith Thompson <kst-u@mib.org> - 2019-03-28 14:04 -0700
  Re: Array-as-pointer Syntax John Bode <jfbode1029@gmail.com> - 2019-03-29 07:24 -0700
    Re: Array-as-pointer Syntax Ike Naar <ike@iceland.freeshell.org> - 2019-03-29 18:08 +0000

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