ProcessBicycleGears Program Problem

**welsh_rocker** · 02-10-2011, 08:14 PM

Java Code:

// 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?