About structure member order

[xcppcoder@gmail.com]

Hello
I want to send the data of a structure over TCP/IP, my question is that
can I use this approach?

struct
{
int val;
char szVal[128];
} mystruct;

sendMyStruct(&m ystruct);

receiveMyStruct (&myRecvStruct) ;

The real question as I think, is there any difference between the
previous structure and the following structure;

struct
{
char szVal[128];
int val;
} mystruct;

Thanks

[Jakob Bieling]

Re: About structure member order

xcppcoder@gmail .com wrote:
[color=blue]
> struct
> {
> int val;
> char szVal[128];
> } mystruct;[/color]

The address of 'val' will always be lower than the address of
'szVal'.
[color=blue]
> The real question as I think, is there any difference between the
> previous structure and the following structure;
>
> struct
> {
> char szVal[128];
> int val;
> } mystruct;[/color]

The address of 'val' will always be greater than the address of
'szVal'.

So: Yes. Be aware of padding issues between different
compilers/platforms tho. Some compilers offer (obviously
compiler-dependant) switches that allow you to specify the way a
structure is padded.

hth

--
jb

(reply address in rot13, unscramble first)

[xcppcoder@gmail.com]

Re: About structure member order

Thanks for your help