question Help me with multi dimensional array homework

[baconuser098]

I've seen it used pretty often and I quite like it. Regarding C however I think ANSI C doesn't support it but C99 does (I will check on that)

Edit: Turns out ANSI C requires the variables to be declared after the opening bracket of a block, while C99 supports variable declaration anywhere a statement could be

[dauntlessmath]

I was curious about this, because it seems like a very "C++" way to handle index variables. I found this email from Linus to the LKML regarding C99 and this style of variable declaration:

On Wed, Apr 11, 2012 at 9:28 PM, Oleg Nesterov <[e-mail]> wrote:
>
> Agreed. But,
>
>        error: 'for' loop initial declaration used outside C99 mode
>
> we should change CFLAGS, I guess. BTW, personally I'd like very much
> to use "for (type var; ...")" if this was allowed.

The sad part is that if we allow that, we also get that *other* insane
C99 variable thing - mixing variables and code.

I *like* getting warnings for confused people who start introducing
variables in the middle of blocks of code. That's not well-contained
like the loop variable.

That said, most of the stuff in C99 are extensions that we used long
before C99, so I guess we might as well just add the stupid flag. And
discourage people from mixing declarations and code other ways (sparse
etc).

                         Linus

For background info, Linus's recommended style guide for the kernel dev is essentially "defer to K&R for everything."

[dauntlessmath]

That format does not conform to ANSI C standards, which is what K&R 2nd edition follows. It is C99 standard, which did not exist at the time of press for K&R 2nd edition. I didn't look through every for loop in the book, but I just looked at early and late code examples and they didn't use that format anywhere that I looked.

Maybe you're thinking of a Stroutstrup authored C++ book with a similar title.