Would *you* get caught by this one?

[LTH network news server]

In article <139 at mole-end.UUCP> mat at mole-end.UUCP (Mark A Terribile) writes:
>
>	When is     a *= b      not the same as     a = a * b   ?

For example, if you have:

	#define b x + y

then:

	a *= b		<=> 	a *= (x + y)
	a = a * b	<=>	a = (a * x) + y

I strongly recommend the following book:

	Andrew Koenig: ``C Traps and Pitfalls'', Addison-Wesley Publishing
	Company, 1989. ISBN 0-201-17928-8.

Dag Bruck
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Department of Automatic Control		Internet:  dag at control.lth.se
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