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Thread: basic java problem concerning order of operations

  1. #1
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    Default basic java problem concerning order of operations

    Hello Everyone,

    I am new to Java programming and I am having a small problem with a java program concerning order of operations. The problem is as follow

    Write a code that declares variables for s0 with a value of 12.0, v0 with a value of 3.5, a with a value of 9.8, and t with a value of 10, for the for this equation.

    s=so + vo t + 1/2 at^2

    and then write the code to compute s on the basis of these values. At the end of your code, print the value of your variable s to the console.

    So Here is my code so far. the problem I seem to be having is at the end of the problem where I have to multiply a and t and then square it.

    Also print statement does not seem to work either. Any advice on how to fix this I would appreciate it.
     
    //declare variables
    double so;
    double vo;
    double a;
    double t;
    double s;
     
    //compute*s
    so = 12.0;
    vo = 3.5;
    a = 9.8;
    t = 10;
    s=(so) +(vot) +.05 a*t*t;
    //print results
    System.out.println("s");
    Last edited by Williamscn; September 18th, 2014 at 02:01 PM.


  2. #2
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    Default Re: basic java problem concerning order of operations

    Can you edit your post to use the highlight tags and to post your code as an MCVE?
    Useful links: How to Ask Questions the Smart Way | Use Code Tags | Java Tutorials
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    Default Re: basic java problem concerning order of operations

    Thank KevinWorkman,

    I edit my code to make it more readable. Although I could not find the ability of using highlight tags. I hope this helps.

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    Default Re: basic java problem concerning order of operations

    Can you post an MCVE instead of an incomplete snippet? What is the value of vot? What is this line supposed to do, not that it is not valid syntax:

    s=(so) +(vot) +.05 a*t*t;
    Useful links: How to Ask Questions the Smart Way | Use Code Tags | Java Tutorials
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    Default Re: basic java problem concerning order of operations

    I could not find the ability of using highlight tags.
    Here is how to wrap your code with code tags:
    [code=java]
    YOUR CODE GOES HERE
    [/code]
    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: basic java problem concerning order of operations

    I posted the values of each variable in the upper part of the code. What I am trying to do is write a math formula that solves for S.

    s=so + vo t + 1/2 at^2

    So I wrote my code in this format s=(so) +(vot) +.05 a*t*t;

    I have read the MCVE and to me my post does not seem long. I have tried to explain my problem in the top of my post and posted what I am declaring and the order of Operations I am trying to do in my code. So I am a little confused when you say post in MCVE and not a incomplete snippet.

    --- Update ---

    Thanks Norm.

    I edit my code to include the code tags.

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    Default Re: basic java problem concerning order of operations

    It would help if you would copy the full text of the error messages you get from the java compiler and paste them here.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: basic java problem concerning order of operations

    From your first post:

    s=(so) +(vot) +.05 a*t*t;

    You're missing some operators:

    "vot" should be "vo * t"
    ".05 a" should be ".05 * a"

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    Default Re: basic java problem concerning order of operations

    Ok I find my mistake it was a simple matter of having the decimal place in the wrong place. I should have had 0.5 instead of .05.

    Thank you everyone for your help.

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