Re: Additions to goto discussion

[Jan Hudec <bulb@xxxxxx>]

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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