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Thread: ProcessBicycleGears Program Problem

  1. #1
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    Default ProcessBicycleGears Program Problem

    // Find effective radius 
    public class ProcessBicycleGears {
     
        public static double PromptAndRead (String prompt)
        {
        double input;
        UserInput.prompt(prompt);
        input = UserInput.readDouble();
     
        while (input <=0)
        {
            System.out.println(" Error invalid data ");
            input = (int)PromptAndRead (" Please input data again: ");
            // Prompt and read the rear teeth
        }
     
        return input; 
    }
     
        public static double CalcEffectiveRadius (double wRadius, int fSprocket, int rSprocket)
        {
            double eRad = (wRadius * fSprocket) / rSprocket;
            // put your local declarations here
            return eRad;
        }
     
        public static void main(String[] argv) {
            int frontSprocket, rearSprocket;
            double eRadius, wheelRadius, newRadius, ratio;
            // put your local declarations here
     
            wheelRadius = PromptAndRead(" Type the Radius: ");
            // Prompt and read the inches
     
            frontSprocket = (int)PromptAndRead (" Type the front teeth: "); 
            // Prompt and read the front teeth
     
            rearSprocket = (int)PromptAndRead (" Type the rear teeth: ");
            // Prompt and read the rear teeth
     
            eRadius = CalcEffectiveRadius(wheelRadius, frontSprocket, rearSprocket);
            //Declares effective radius calculation
     
            System.out.println(" Effective radius for " + frontSprocket + " and teeth " 
            + rearSprocket + " is " + eRadius);
            // Compute and print
                newRadius = eRadius;
                //Calculates the new effective radius
               do  {
                rearSprocket = (int)PromptAndRead (" Type the rear teeth: ");
                // Prompt and read the rear teeth
                ratio = eRadius % newRadius; //Declares Ratio Calculation
                System.out.println(" Effective radis for " + frontSprocket +
                " and teeth " + rearSprocket + " is " + newRadius + " ratio to previous " + ratio);
                newRadius = (wheelRadius * frontSprocket) / rearSprocket;
                newRadius = newRadius;
                ratio--;
                //Delcares Output from Loop
        } while (rearSprocket >0);
        } // end of main
     
    } // end class

    Hey guys I have to build a program for an assignment that uses 2 constructors for calculations and input I have implemented those features into the program and they run fine, but I am still having problems with the second series of the program that implements a while Do while Loop to do the effective Radius Calculation and out out the overall ratio could someone take a look at my code and tell me where I'm going wrong if possible?


  2. #2
    Super Moderator copeg's Avatar
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    Default Re: ProcessBicycleGears Program Problem

    Cross posted at ProcessBicycleGears Program Problem. While cross-posting is not against the rules of this forum, I recommend you be forthright in revealing where else your question was posted. For reasons why, see The problems with crossposting

  3. #3
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    Default Re: ProcessBicycleGears Program Problem

    Mods could you delete thisd thread for me
    Last edited by welsh_rocker; February 10th, 2011 at 02:59 PM.

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