// This program goes into an infinite loop
// You need to figure out why

public class Infinite {

    public static void main (String [] args) {
	int n = 1, sum = 0;
	
	// the loop computes the sum of all odd numbers <= 20
	while (n <= 20) {
	    sum = sum + n;
	}

	System.out.println("sum = " + sum);
    }
}