comma operator: keep away?

[Lloyd Kremer]

In article <19913 at iuvax.cs.indiana.edu> bobmon at iuvax.cs.indiana.edu (RAMontante)
writes:
>Is there a circumstance in which the comma operator is required, where
>the compound statement cannot be broken into multiple statements?

Perhaps not required, but convenient nevertheless.

I often use it for loop tests using functions that "get" information but
do not "return" the information they get.  For example:

	extern double frexp();
	double f[SIZE];
	int i, exp;

	...
	while(frexp(f[i++], &exp), exp < 10)
		statement;
	...

Another example would be:

	char c;

	while(read( ..., &c, 1), c != '\n')

assuming EOF detection is not needed for this read() (horrible assumption,
I know).

-- 
					Lloyd Kremer
					Brooks Financial Systems
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