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Thread: Primitive types

  1. #1
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    Default Primitive types

    int low = 2;
    int high = 1;

    while (high < 10){


    System.out.println(high);
    int temp = high;
    high = high + low;
    low = temp ;
    }

    i am a beginner to java, having said that, in my head I compile the output as 1, 3, 4, 6 whereas complier says 1, 3, 4, 7.
    What am i not understanding ? Also how is it possible to initialize 1 variable with anther, for example low = temp ?


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Primitive types

    If you do not understand the results of any of the statements, add a println after the statement to print out the value of all the variables used in the statement.

    System.out.println("high=" + high);

  3. The Following User Says Thank You to Norm For This Useful Post:

    sudesh (January 28th, 2012)

  4. #3
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    Default Re: Primitive types

    thanks. I did that and this is what i get. Why is "low" constantly changing its value, should it not have a set value of 2, that is what keeps confusing me.

    int low = 2;
    int high = 1;

    while (high < 8){


    System.out.println(high);
    int temp = high;
    high = high + low;
    low = temp ;
    System.out.println("low="+low);

    }

    This is the output

    1
    low=1
    3
    low=3
    4
    low=4
    7
    low=7

  5. #4
    Java kindergarten chronoz13's Avatar
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    Default Re: Primitive types

    1, 3, 4, 6
    i really dont get what you want here, but based on what you said, you want this output but you get 1, 3, 4, 7, you need to keep track of the 'high' variable, try to count it step-by-step, you will be able to understand why does it give 'low' a value of 7

    temp = high
    high = high + low
    low = temp

    therefore low is equal to high

  6. The Following User Says Thank You to chronoz13 For This Useful Post:

    sudesh (January 28th, 2012)

  7. #5
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    Default Re: Primitive types

    Quote Originally Posted by sudesh View Post
    int low = 2;
    int high = 1;

    while (high < 10){


    System.out.println(high);
    int temp = high;
    high = high + low;
    low = temp ;
    }

    i am a beginner to java, having said that, in my head I compile the output as 1, 3, 4, 6 whereas complier says 1, 3, 4, 7.
    What am i not understanding ? Also how is it possible to initialize 1 variable with anther, for example low = temp ?
    You're program is doing what it should correctly. I would look at the logic of whats happening with each iteration. And I'm not sure what you mean by initialize. If you mean create a variable with another variable, Java is an Object oriented language, so I'm willing to bet you'll need an object or a class.

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