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Average Rain Fall

Posted on 2009-07-01
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Last Modified: 2013-12-14
im trying to write a program that uses nested loops to collect data and calculate the average rainfall over a period of years. Basically the program should ask for the number of years. The Outer Loop will iterate once for each year. The Inner Loop will iterate 12 times, once for each month. Each iteration of the inner loop will ask the user for the inches of rainfall for that month. After all iterations, the program shold display the number of months, the total inches of rainfall, and the average rainfall per month for the entire period.

Im having a hard time starting the code and that is why i have not posted anything.
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Question by:AgentC4
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12 Comments
 
LVL 20

Expert Comment

by:a_b
ID: 24760406
To help you get started, nested loops -

for(int i=0;i<noOfYrs;i++)
{
     for(int j=0;,j<12;j++)
     {
           // Do all the processing here
     }
}
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Author Comment

by:AgentC4
ID: 24760449
Thanks this helped a bit. Are you able to post the full code so I can compare to what have. I have a feeling I'm way off. My teacher doesn't do a well job at explaining much.
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LVL 20

Expert Comment

by:a_b
ID: 24760532
@AgentC4: Why don't you post your code so that we can have a look at what is wrong, instead of you copying the stuff off the website?
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Author Comment

by:AgentC4
ID: 24762316
Ok ill post my code as soon as I'm finished with my exam. And no one said I'm just copingy and calling it a day. I've been doing over twenty problems because I've been on medical leave and my teachers notes online are probably better starting a fire rather than teach.
0
 

Author Comment

by:AgentC4
ID: 24762879
Oh no please don't think I'm accusing you or anyone I just don't want you guys to think I'm coming here for an easy outcome. I do need this stuff explained because my teacher isn't doing a great job at it. Ill post what I have soon after I leave the doctors office. And thanks in advance.
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LVL 7

Accepted Solution

by:
humanonomics earned 2000 total points
ID: 24765364
OOps soory, I thought he is the same other guy, who had posted incomplete code in another question, their problem questions are pretty much same @ Venabili

http://www.experts-exchange.com/Programming/Languages/Java/J2EE/JavaMail/Q_24538353.html
0
 

Author Comment

by:AgentC4
ID: 24765592
This is what i have so far, i cant figure out which LOOP choice to go with.
public class AverageRainFall
{
    public static void main(String [] args)
    {
        double years;
        double months=12;
        double total=0;
        double average;
        double months[];
        double grandTotal=0;
        months = new double[12];
        String input;
 
        Scanner keyboard = new Scanner(System.in);
 
        DecimalFormat dollar = new DecimalFormat("##0.00");
 
        input = JOptionPane.showInputDialog("Please enter number of years? "); 
		
        years = Integer.parseInt(input);

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0
 

Author Comment

by:AgentC4
ID: 24765612
sorry please use this for the decimal
DecimalFormat Rain = new DecimalFormat("##0.00");

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0
 

Author Comment

by:AgentC4
ID: 24765940
My teacher didnt do  a well job at explaining the differences between WHILE, DO-WHILE, and FOR  nad how they work and thats where im pretty much stuck
0
 
LVL 7

Expert Comment

by:humanonomics
ID: 24769458
OOps soory, I thought he is the same other guy, who had posted incomplete code in another question, their problem questions are pretty much same @ Venabili

http://www.experts-exchange.com/Programming/Languages/Java/J2EE/JavaMail/Q_24538353.html
0
 
LVL 7

Expert Comment

by:humanonomics
ID: 24769723
Go step by step, first loop over the years initially and then loop over the months
0
 

Author Comment

by:AgentC4
ID: 24769936

public class AverageRainFall
{
    public static void main(String [] args)
    {
        double years;
        double months=12;
        double total=0;
        double average;
        double months[];
        double grandTotal=0;
        months = new double[12];
        String input;
 
        Scanner keyboard = new Scanner(System.in);
 
        DecimalFormat dollar = new DecimalFormat("##0.00");
 
        input = JOptionPane.showInputDialog("Please enter number of years? "); 
                
        years = Integer.parseInt(input);
 
        for(int y = 1; y <= years; y++) 
        {
           System.out.println("Please enter rainfall using inches for         year #: " + y +);
         
        }

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