Can somebody please explain why this code:

int[20][2] whatever;
 whatever[19][0] = 2;

gives this error:

test.d(6): array index [19] is outside array bounds [0 .. 2]

and  this code gives the same error:

int[2][20] whatever;
 whatever[0][19] = 2;

test.d(6): array index [19] is outside array bounds [0 .. 2]

Im still using v0.77 so was it a bug in this ver or am
I doing this wrong?

Phill.

and even stranger this compiles and runs:

int[2][20] test;
test[19][0] = 2;

Phill.


"Phill" <phill@pacific.net.au> wrote in message news:bvfd9p$2qef$1@digitaldaemon.com...
> Can somebody please explain why this code:
>
> int[20][2] whatever;
>  whatever[19][0] = 2;
>
> gives this error:
>
> test.d(6): array index [19] is outside array bounds [0 .. 2]
>
> and  this code gives the same error:
>
> int[2][20] whatever;
>  whatever[0][19] = 2;
>
> test.d(6): array index [19] is outside array bounds [0 .. 2]
>
> Im still using v0.77 so was it a bug in this ver or am
> I doing this wrong?
>
> Phill.
>
>
>

Phill wrote:

> Can somebody please explain why this code:
> 
> int[20][2] whatever;
>  whatever[19][0] = 2;
> 
> gives this error:
> 
> test.d(6): array index [19] is outside array bounds [0 .. 2]
> 
> and  this code gives the same error:
> 
> int[2][20] whatever;
>  whatever[0][19] = 2;
> 
> test.d(6): array index [19] is outside array bounds [0 .. 2]
> 
> Im still using v0.77 so was it a bug in this ver or am
> I doing this wrong?
> 
> Phill.
> 
> 
> 

You might try:

int[20][2] whatever;
 whatever[0][19] = 2;

or

int whatever[2][20];
 whatever[0][19] = 2;


It's like this on purpose.  I think it's to faciliate porting exotic code from C, but I don't recall any more details.

-- 
Justin
http://jcc_7.tripod.com/d/

Ok thanks! I like exotic :o))

Phill.


"J C Calvarese" <jcc7@cox.net> wrote in message news:bvfeni$2t8u$1@digitaldaemon.com...
> Phill wrote:
>
> > Can somebody please explain why this code:
> >
> > int[20][2] whatever;
> >  whatever[19][0] = 2;
> >
> > gives this error:
> >
> > test.d(6): array index [19] is outside array bounds [0 .. 2]
> >
> > and  this code gives the same error:
> >
> > int[2][20] whatever;
> >  whatever[0][19] = 2;
> >
> > test.d(6): array index [19] is outside array bounds [0 .. 2]
> >
> > Im still using v0.77 so was it a bug in this ver or am
> > I doing this wrong?
> >
> > Phill.
> >
> >
> >
>
> You might try:
>
> int[20][2] whatever;
>   whatever[0][19] = 2;
>
> or
>
> int whatever[2][20];
>   whatever[0][19] = 2;
>
>
> It's like this on purpose.  I think it's to faciliate porting exotic code from C, but I don't recall any more details.
>
> --
> Justin
> http://jcc_7.tripod.com/d/

While it was 31/1/04 5:09 am throughout the UK, Phill sprinkled little black dots on a white screen, and they fell thus:
> Can somebody please explain why this code:
> 
> int[20][2] whatever;
>  whatever[19][0] = 2;
> 
> gives this error:
> 
> test.d(6): array index [19] is outside array bounds [0 .. 2]
<snip>

So that the syntax is logical.

int[20][2] is an array of two int[20]s, not of 20 int[2]s.

Declarations then read from right to left, rather than C-style middle to right and then to left, or hopping about as you were thinking of it.

Stewart.

-- 
My e-mail is valid but not my primary mailbox, aside from its being the unfortunate victim of intensive mail-bombing at the moment.  Please keep replies on the 'group where everyone may benefit.

Ok I get the picture, thanks.

Its just different than I have been using before.

Phill.

"Stewart Gordon" <smjg_1998@yahoo.com> wrote in message news:bvlmg9$1268$1@digitaldaemon.com...
> While it was 31/1/04 5:09 am throughout the UK, Phill sprinkled little black dots on a white screen, and they fell thus:
> > Can somebody please explain why this code:
> >
> > int[20][2] whatever;
> >  whatever[19][0] = 2;
> >
> > gives this error:
> >
> > test.d(6): array index [19] is outside array bounds [0 .. 2]
> <snip>
>
> So that the syntax is logical.
>
> int[20][2] is an array of two int[20]s, not of 20 int[2]s.
>
> Declarations then read from right to left, rather than C-style middle to right and then to left, or hopping about as you were thinking of it.
>
> Stewart.
>
> --
> My e-mail is valid but not my primary mailbox, aside from its being the unfortunate victim of intensive mail-bombing at the moment.  Please keep replies on the 'group where everyone may benefit.