/*
 * Assignment.java
 *
 * Created on November 10, 2005, 1:00 PM
 *
 * This program was writen for an assignment for my CS 101 class.
 * Assignment asks the user for a whole number and returns the whole
 * plus each value between the number given and 0 (for example: the
 * user enters in '3', this program takes three and adds ((((3)+ 2)+ 1)+ 0)).
 *
 */

/**
 *
 * author Alvin D. Morris
 * Credit also to my friend Kurt who helped me with my java noobie-ness.
 *
 */
import java.util.*;

public class Assignment
{
	// Method.
	public static int yeah(int y)
	{
		int counter = 0;
		// tv = total value.
		int tv = 0;

		// while loop adds the counter to the total value and then adds one to the
		// counter until the counter is >= y.
		while(counter <= y)
		{
			tv = tv + counter;
			counter++;
		}
		return tv;
	}
	// Main body of Program.
	public static void main(String[] args)
	{
		Scanner kb = new Scanner(System.in);
		int x;
		int y = 0;

		// do loop does everything in the loop at least once.
		do
        {
			System.out.println("Type in a whole number (negative to quit): ");
       		x = kb.nextInt();
			// if statement.
			if(x >= 0)
			{
				y = yeah(x);
				System.out.println(y);
			}
		// while loop.
		}while (x >= 0);
	}
}

public static int yea(int y) {
    for(int counter=0,tv=0;counter<=y;counter++)
        tv += counter;
}

		// tv = total value.
		int tv = 0;

#if 0 /* in case someone actually tries to compile this */

	public static int sum(int n) { 
		return (n > 0) ? n + sum(n-1) : 0;   
	}