Question

Write a program that uses nested loops to collect data and calculate the average rainfall over a period of years. The program should prompt the user for the number of years. Be sure to ask for each months average rainfall for each year. The outer loop will iterate once for each year while the inner loop will iterate 12 times(one time per month) prompting for the months average rainfall on each iteration. Display the number of months, the total inches of rainfall and the average rainfall per month for the entire period of years. This means you will not display back each individual reading but a grand total and avergae. Do not accept a number less than 1 for the number of years and do not accept negative numbers for the monthly rainfall.

Eclipse Workspace Java Application

Answer 1

import java.text.DecimalFormat;
import java.io.*;
import java.util.*;
public class RainFall{
public static void main(String[] args)     
{              
      Scanner kb=new Scanner(System.in);     
      int years;
      int month=12;       
      double total=0;       
      double average;
      int months[];      
      String input;

      months = new int[12];              
      DecimalFormat df = new DecimalFormat("##0.00");                
      System.out.println("Enter the number of years you wish to calculate. ");
input = kb.nextLine();


      for(int y = 1; y<=Integer.parseInt(input); y++)               
      {       
          System.out.println("Enter the amount of rainfall in inches for year #"+y+":");  
        years = Integer.parseInt(input);
      while (y < 1)
      {
          System.out.println("Do not accept a number less than 1 for the number of years.");
        }
      for(int m = 1; m<=12; m++ )
      {               
          System.out.println("Enter the amount of rainfall in inches for month #" + m + ":");

          months[m-1]= kb.nextInt();
          while (m < 0)
          {
          System.out.println("Do not accept negative numbers for the monthly rainfall.");   
           }
      }                      

      for(int i=0; i<12;i++)
      {                      
         total= total+months[i];              
      }   

      System.out.println("The total amount of rainfall for year " + y + " is " + total);  
      average = total/12;
      System.out.println("The average of rainfall for year " + y + " is " + average);

    }
}

}