//
//
//	Name: 		Division.java
//
//	Author:		John Wang
//	Instructor:	Dr. Wang
//
//	Goal: Read ? integers (<20, in.txt) into an array

import java.util.Scanner;
import java.text.DecimalFormat;

public class ArrayIn6
{
	// declare a named constant
	public static final int MAX = 50;

	public static void addArrayBy5(int[] data, int size)
	{
		for(int i=0; i<size; i++)
			data[i] += 5;
	}

	// Define a method to sum up all the elements of array data[]
	public static double average(int[] data, int size)
	{
		int s = 0;
		for(int i=0; i<size; i++)
			s += data[i];
		return (double)s/size;
	}

	// define a method to output all the elements of data[] to the monitor

	public static void output(int[] data, int size)
	{
		for(int i=0; i<size; i++)
			System.out.print(data[i] + " ");
	}

	public static void main(String[] args)
	{
		DecimalFormat f2 = new DecimalFormat("0.00");

		Scanner kb = new Scanner(System.in);
		int size = 0;

		int[] data = new int[MAX];

		while(kb.hasNext())
		{
			data[size] = kb.nextInt();
			size ++;
		}

		// use methods
		double avg = average(data, size);
		System.out.println("Before - Average = " + f2.format(avg));

		addArrayBy5(data, size);

		avg = average(data, size);
		System.out.println("After - Average = " + f2.format(avg));




		// use the method output()
//		output(data, size);

/*
		// debug

*/

		System.out.println("\n\n\n\n");
	}
}