Re: Implementation-defined behaviour

CBFalconer wrote:

pete wrote:
Ioannis Vranos wrote:

... snip ...

K&R2 mentions the following:

"printf("%d %d\n", ++n, power(2,n)); /* WRONG */

can produce different results with different compilers, depending
on whether n is incremented before power is called".

That's why I call it implementation-defined behaviour.

It's unspecified behavior. The power(2,n) function call,
introduces a sequence point that the other code examples don't
have. This is all about sequence points.

Not quite. Also order of parameter evaluation.

By "this" I was refering to OP's confusion
about what was undefined
versus implementation defined and unspecified behavior.

--
pete
.

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