🚀 go-pugleaf

mikes@forte.com (Mike Schilling) writes:

>Fergus Henderson (fjh@munta.cs.mu.OZ.AU) wrote:
>: There is a neat hack which gives you the new behaviour with old compilers:
>:
>:   #ifdef USE_HACK_FOR_NEW_FOR_SCOPE
>:   #define for(x) if (0) ; else for(x)
>:   #endif
>:
>: (Did I get that right this time?)
>Try this with:
>
>    for (i = 0, p = string; *p; i++, p++)

Yes, that macro hack does have its disadvantages.
In cases like this, you can use some extra parentheses:

     for ((i = 0, p = string); *p; (i++, p++))

For cases like

     for (int i = 0, j = 0; a[i] != a[j]; i++, j++)
	  ^^^

it's a bit trickier - you have to write something like

     int i = 0, j = 0;
     for (; a[i] != a[j]; (i++, j++))

or
     int i, j;
     for (i = j = 0; a[i] != a[j]; (i++, j++))

--
Fergus Henderson             	WWW: http://www.cs.mu.oz.au/~fjh
fjh@cs.mu.oz.au              	PGP: finger fjh@128.250.37.3


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