Thread: How Does Increment Operators Work...??

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  1. 02-06-2008 #27
    laserlight
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    hk_mp5kpdw already answered you in the first reply: it is undefined behaviour. You could get 15, you could get 17, or you could get your computer blown up.

    EDIT:
    Though I am assuming that you actually fix the statement to become:
    Code:
    a = (b++) + (--b) + (b--) + b;
    or at least:
    Code:
    a = (b++) + (- - b) + (b--) + b;
    Last edited by laserlight; 02-06-2008 at 09:51 AM.
    Quote Originally Posted by Bjarne Stroustrup (2000-10-14)
    I get maybe two dozen requests for help with some sort of programming or design problem every day. Most have more sense than to send me hundreds of lines of code. If they do, I ask them to find the smallest example that exhibits the problem and send me that. Mostly, they then find the error themselves. "Finding the smallest program that demonstrates the error" is a powerful debugging tool.
    Look up a C++ Reference and learn How To Ask Questions The Smart Way
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