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Thread: C: is a number even!!

  1. Sep 20th, 2002, 03:06 PM #1
    mrchaos
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    C: is a number even!!

    how can i check if a number is even in C...is there a function to do so, if so which header file is it in?


    Thanks,
    Steve
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  2. Sep 20th, 2002, 03:08 PM #2
    SteveCRM
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    if(num%2==0)
    //then the number's even
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  3. Sep 20th, 2002, 03:11 PM #3
    mrchaos
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    thanks
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  4. Sep 23rd, 2002, 12:31 PM #4
    jim mcnamara
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    just use macros like
    Code:
    #define iseven(c) (c%2==0)
    usage
    Code:
    int a;
........
if (iseven(a) ) ..........;
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  6. Sep 24th, 2002, 06:49 AM #5
    CornedBee
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    (num & 0x1) would be faster, accomplishing the same.
    All the buzzt
    CornedBee

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  7. Sep 25th, 2002, 03:40 AM #6
    Dreamlax
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    Now that's a smart one... have to keep that one in mind!
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