even and odd numbers

This is a discussion on even and odd numbers within the C++ Programming forums, part of the General Programming Boards category; in c++ how do you check if a number is odd or even? thanks...

  1. #1
    C++Pandit
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    Thumbs up even and odd numbers

    in c++ how do you check if a number is odd or even?

    thanks

  2. #2
    Registered User
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    num % 2

  3. #3
    Kernel hacker
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    There is a FAQ entry with just that title. You may find that, and other useful stuff here:
    http://faq.cprogramming.com/cgi-bin/smartfaq.cgi

    --
    Mats
    Compilers can produce warnings - make the compiler programmers happy: Use them!
    Please don't PM me for help - and no, I don't do help over instant messengers.

  4. #4
    C++Pandit
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    thanks !!

  5. #5
    C++Pandit
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    how do i check if a number is not divisible by 2?

  6. #6
    and the Hat of Guessing tabstop's Avatar
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    not divisible by 2 == odd.

    Or you could read what % does.

    Or ... and so on.

  7. #7
    C++まいる!Cをこわせ!
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    The modulus operator (%) returns the remainder of a division. So say you divide 3 by 2. The remainder is 1. If the remainder is 0, the number must be even; otherwise, if it is odd, the remainder is not 0.
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

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