/**********************************************************
 * class MathStats
 * 
 * Description: Demonstrates user input, output, using
 *              assignment operators, and using the 
 *              Math class
 * 
 * Input: The user enters 3 integers.
 *
 * Output: Print the 3 integers the user entered, the sum
 *         of the 3 integers, the average, the sum squared,
 *         and the square root of the sum.
 **********************************************************/

import java.io.*;   // for reading keyboard input

public class MathStats
{
	static final int NUM = 3;
	static BufferedReader keyboard = new BufferedReader (new 
		InputStreamReader(System.in));
	
	public static void main (String[] args) throws IOException
	{
		int num1, num2, num3;
		int sum = 0;
		double average,  sumSqrt;
		double sumSquare;
		
		/*******************************************
		 * Ask the user for an integer three times.
		 * Store the integer and add it to the sum.
		 *******************************************/
		System.out.print ("Enter an integer: ");
		num1 = Integer.parseInt(keyboard.readLine());
		sum += num1;
		
		System.out.print ("Enter an integer: ");
		num2 = Integer.parseInt(keyboard.readLine());
		sum += num2;
		
		System.out.print ("Enter an integer: ");
		num3 = Integer.parseInt(keyboard.readLine());
		sum += num3;
		
		/*********************************************
		 * Compute the average, the square of the sum
		 * and the square root of the sum
		 *********************************************/
		average = (double) sum / NUM;
		sumSquare = Math.pow (sum, 2);
		sumSqrt = Math.sqrt (sum);
		int x = (int) Math.round(sum);
		
		/*********************************************
		 * Output the final results to the user.
		 *********************************************/		
		System.out.println ("The numbers are " + num1 + ", " +
								  num2 + ", " + num3);
		System.out.println ("The sum is " + sum);
		System.out.println ("The average is " + average);
		System.out.println ("The sum squared is " + sumSquare);
		System.out.println ("The square root of the sum is " + sumSqrt + ", or about "
									+ Math.round(sumSqrt));
				
				
		
	} // end of main method
	
} // end of MathStats class