// COBOL Programmers Swing With Java - copyright 2005 Doke, Hardgrave, & Johnson
// Chapter 7 - Loops
// Program to demonstrate do loop
// DoLoopDemo.java 1 JAN 05

public class DoLoopDemo
{
    public static void main (String args[])
    {
    // we have an amount of money in an interest bearing account: initialBalance
    // each year we make a fixed deposit to the account: annualDeposit
    // the account earns at an annual rate of interest: apr
    // how many years are required for our account to double in value: years

    // declare variables
    float initialBalance = 1000F;  // let's begin with $1,000
    float annualDeposit = 100F;	   //  then deposit $100 at end of each year
    float apr = 0.05F;		   // apr is 5%
    float currentBalance;	   // running balance
    int numberOfYears;		   // count the number of years

    // initialize currentBalance and numberOfYears
    currentBalance = initialBalance;
    numberOfYears = 0;

    System.out.println ("Output From do Loop");  // print headings
    System.out.println ("Year    Balance");

    // beginning of do loop
    do
    {
	currentBalance = currentBalance * (1 + apr) + annualDeposit;
	numberOfYears = numberOfYears + 1;  // increment numberOfYears
	System.out.println (numberOfYears + "         " + Math.round(currentBalance));
    } while (currentBalance <= 2 * initialBalance);  // end of do loop

    System.out.print ("In " + numberOfYears + " years.");
    System.out.println ("The balance will be " + Math.round(currentBalance));
    } // end of main method
} // end of DoLoopDemo.java