//SumAvgMax.java
//input a bunch of numbers and sum them (using while loop)

import java.awt.*;
import javax.swing.*;

public class SumAvgMax extends JApplet {    

    public void init() {
	String input;

	int num, count=0, largest, smallest;
	double sumSqrts=0, sum=0;

	//"priming read" to get first number
	input = JOptionPane.showInputDialog( "Enter a number" );
	num = Integer.parseInt( input );
	largest = num;
	smallest = num;
	
	while (num != 0) {   //loop until 0.
	    sum = sum + num;	//add number to sum.
	    count++;            //add one to count of numbers.
	    if (num > largest)  //this number bigger than largest so far
		largest = num;  //so it becomes largest so far.
	    if (num < smallest) //this number smaller than smallest so far
		smallest = num; //so it becomes smallest so far.
	    if (num > 0)        //positive numbers square roots summed.
		sumSqrts = sumSqrts + Math.sqrt(num);
	    //get next number:
	    input = JOptionPane.showInputDialog( "Enter a number" );
	    num = Integer.parseInt( input );
	}
	//report results
	if (count > 0)
	    JOptionPane.showMessageDialog(null, "sum=" + sum + 
					  "  Average=" + sum/count + 
					  "  Max=" + largest +
					  "  Min=" + smallest +
					  "  SumSqrts="  + sumSqrts); 	
	else
	    JOptionPane.showMessageDialog(null, "No numbers entered");
    }
}