ABOUT CALCULATION - Biorhythms

This is a discussion on ABOUT CALCULATION - Biorhythms within the C++ Programming forums, part of the General Programming Boards category; HI EVERYONE,, this is my function and i will state the problem at the bottom.. Code: //calculate the physical cycle ...

  1. #1
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    ABOUT CALCULATION - Biorhythms

    HI EVERYONE,,

    this is my function and i will state the problem at the bottom..

    Code:
    //calculate the physical cycle which has physical curve 23 days
    double physicalCycle(Date& dob, Date& currentDate)
    {
       double score;
       double distance = distanceFromDobAndCurrentDate(dob, currentDate);
       
       score = 100 * sin(360*(distance/23));
       return score;
    //check - the answer should be 63.10879473
    }
    when i entered
    dob: 1 1 1969
    current date: 1 6 2004

    the output of the physical cycle should be 63.10879473 but it is wrongly output which is -80.---

    can someone tell me wat is the problem, is it the formula or..?

    this is the website u can calculate the physical cycle http://www.orcapia.com/froggy/biorhy...&detl=1&save=1

  2. #2
    carry on JaWiB's Avatar
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    Have you checked that the distance is calculated correctly? Have you taken into account that sin takes radians, not degrees? (To convert from degrees to radians multiply by pi and divide by 180)
    "Think not but that I know these things; or think
    I know them not: not therefore am I short
    Of knowing what I ought."
    -John Milton, Paradise Regained (1671)

    "Work hard and it might happen."
    -XSquared

  3. #3
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    i though tat sin is in the library..

  4. #4
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    yes the distance is 100% sure correct

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