/*
    Loops4.java
    CIS 160
    David Klick
    2004-09-17

    Demonstrates repetition and accumulators
*/
public class Loops4 {
    public static void main(String[] args) {
        int i;
        int accum;

        System.out.println("This program adds up the even numbers"
            + " from 1 to 10 using different types of loops.");

        System.out.print("\nA do loop:    ");
        i = 2;
        accum = 0;
        do {
            accum = accum + i;
            i = i + 2;
        } while (i <= 10);
        System.out.print(accum);

        // this is called a pre-test loop because the test
        //    is at the beginning of the loop
        System.out.print("\nA while loop: ");
        i = 2;
        accum = 0;
        while (i <= 10) {
            accum = accum + i;
            i = i + 2;
        }
        System.out.print(accum);

        // the for loop is also a pre-test loop
        System.out.print("\nA for loop:   ");
        accum = 0;
        for (i=2; i<=10; i=i+2) {
            accum = accum + i;
        }
        System.out.print(accum);
    }
}