Re: [avr-gcc-list] Question about gcc preprocessing and port/pin assignments

[David Kelly]

On Dec 9, 2004, at 7:43 PM, Dave Hylands wrote:

> In the example I showed, a = ( b = 3 ) + 4; we know that a will be
> assigned 7 and b will be assigned 3. We don't know the order that these
> assignments will take place in.

A classic example is that the following won't evaluate the same for all 
C compilers. We know nothing of the order each a++ will be executed. 
"b" will usually be either 9 or 11, depending on your compiler and its 
options altho 8 is also possible.

a = 2;
b = a++ + 3 * a++;

--
David Kelly N4HHE, address@hidden
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Whom computers would destroy, they must first drive mad.