Hi andrew.

06-Aug-03 02:21:30, andrew clarke wrote to Jasen Betts


 ac> Sun 2003-08-03 22:31, Jasen Betts (3:640/1042) wrote to Bill Birrell:

 JB>> I have a question: -  something that came up in the C++ echo recently

 JB>> Given

 JB>> typedef struct moo
 JB>>   {
 JB>>  int foo;
 JB>>  char bar;
 JB>>   } moo;

 JB>> is   sizeof(moo) * 100   always the same as   sizeof( moo[100] )

 ac> moo[100] is not valid, but I think you mean:

My compilers don't complain... are you shure?

 ac> moo amoo[100];

 JB>> in other words does sizeof() include any slack space required for
 JB>> alignment.

 ac> Structure padding is between structure members, not array elements, eg.

so in this case the structure is padded at the end if alignment is turned on.
ah, thanks...

 -=> Bye <=-

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