Re: [avr-gcc-list] OT Generic C question

[Marc Wetzel]

Hi Trampas,

Thats why you have an post-increment operator and pre-increment operator.

i=++i;

will give you the result, you'd expected.

i++, will execute the assignment and after that the value gets inc'd
++i, will inc'd and then assign

Hopefully I got it right :)

/Marc


Trampas wrote:

> I was helping a friend debug some code, he is new to C,  using the Keil
> version of GCC for ARM. Anyway I found the following:
>
> int i;
>
> i=0;
> i=i++;
> //i was still zero that 
>
> That is i=i++ never incremented i, now I would have thought the line would
> be the same as:
>
> i=i;
> i=i+1; 
>
> So you guys are the smartest people I know when it comes to C so I thought I
> would ask you guys if this is a compiler bug or is my understanding of C
> just been shaken. 
>
> Regards,
> Trampas 
>
>
>
>
>
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