On Fri, Jan 09, 2004 at 08:22:27 +0000, Anticipating a Reply wrote:
> Hi ,
>
> Just adding to the discussion of goto usage ,
> the below helps avoid using goto .
>
>
> do { ... } while (0) ;
>
>
> That is, it allows you to break out of the block
> early if some condition is met, without defining
> a label and using goto.
>
> Consider:
>
> do {
> if (foo)
> break;
>
> some();
> thing();
> which();
> takes();
> forever();
> } while (0);
>
> Cheers !
This won't work if the function already includes whiles or switches and
if there is a deeper nesting, it's not immediately obvious, how many
levels the break will exit -- it's much easier to find a label, which is
indented from first column, than a closing brace matching innermost
while, do or switch.
-------------------------------------------------------------------------------
Jan 'Bulb' Hudec <bulb@ucw.cz>
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