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rikotech8
Joined: 10 Dec 2011
Posts: 376
Location: Sofiq,Bulgariq
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| syntax question |
 Posted: Sun Aug 19, 2012 11:33 am |
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Hello!
What is the difference between ++value and value++.
I searched into the books I have, but unsuccessfully.
Thanks a lot in advance! |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Sun Aug 19, 2012 11:48 am |
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Do a Google search for this:
| Quote: |
increment OR pre-increment post-increment in C
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Copy and paste it into Google. |
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asmboy
Joined: 20 Nov 2007
Posts: 2128
Location: albany ny
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| Posted: Sun Aug 19, 2012 6:42 pm |
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i'm personally very fond of:
which does compile and work as expected  |
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bkamen
Joined: 07 Jan 2004
Posts: 1611
Location: Central Illinois, USA
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| Posted: Sun Aug 19, 2012 9:05 pm |
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| asmboy wrote: | i'm personally very fond of:
which does compile and work as expected |
Hahahah. Dork. Hahahaha...
Very funny indeed.
_________________
Dazed and confused? I don't think so. Just "plain lost" will do. :D |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19346
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| Posted: Mon Aug 20, 2012 2:00 am |
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Seriously the comment about searching books, does worry. This is in every basic C textbook.
PCM programmer's answer, points to loads of places explaining it, but it is equally easy in a situation like this, to test for yourself.
| Code: |
int8 post, pre, result;
post=1;
result=post++;
printf("%d result %d post\n\r",result,post);
pre=1;
result=++pre;
printf(%d result %d pre\n\r",result,pre);
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put a basic processor define, and main, and run it in something like MPLAB, or on a real PIC, and you will see exactly what the difference is.
If in doubt, on any operation like this, a basic test like this takes hardly any more time than asking the question, and you then 'know' exactly what happens.
Best Wishes |
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