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Thread: Question about expression result

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    Lightbulb Question about expression result

    I have a question about this:

    Which of the following expression results in 45.37:

    This can NOT work, why?

    (int)(45.378) * 100 / 100.0

    BUT this CAN work:

    (int)(45.378 * 100) / 100.0

    Why? THANK YOU!


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    Super Moderator Norm's Avatar
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    Default Re: Question about expression result

    Try working out the expressions by hand.
    Use the parenthesis to control the order that the expressions are evaluated.
    The casting will be done before the arithmetic operator.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Question about expression result

    Top work!

    After you mentioned the "casting will be done before the arithmetic operator" it all made sense

    I know increments and decrements like x++ and --x have priority, it did NOT mention in the first 80 pages it was true for "casting".

    THANK YOU so much!!

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    Default Re: Question about expression result

    Hi JohnnyNW and welcome

    Thread moved from member introductions

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