A simple return and it does not work

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  1. #1
    Registered User
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    A simple return and it does not work

    Hey!

    I've been enjoying this board as a guest for a while now...I thought this would be a good time to post.

    Why on earth does this function not return what it should? Always 0, it always returns zero. It doesn't matter what number I put into skott_ar. I need help!!

    Code:
    int skott(double skott_ar)
    {
    double tal;
    double tal2;
    double tal3;
    
    tal=fmod(skott_ar,4);
    tal2=fmod(skott_ar,100);
    tal3=fmod(skott_ar,400);
        
        if (tal=0)
        {
           return 1;       
        } else{return 0;}
    }

    Thanks for your time...

    Christopher

  2. #2
    Devil's Advocate SlyMaelstrom's Avatar
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    = is an assignment operator

    == is a comparison operator
    Sent from my iPadŽ

  3. #3
    Its hard... But im here swgh's Avatar
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    post the entire program including header files so I can see the problem.

    i would of thought from the above, use a do while loop and not an if statement. but i need
    the whole program to understand it

  4. #4
    Its hard... But im here swgh's Avatar
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    change =

    to ==

  5. #5
    Registered User
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    Yes, you now assign tal the number 0. You don't check if the number is equal to zero. So it will break out of the if statement.

    Change if(tal = 0) to if(tal == 0)

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