/* Get n from the commandline argument and prints all primes <= n.
 *
 * This program demonstrates the use of nested for loops.
 */

class PrimesUsingFor {

    public static void main(String[] args) {
        int maxN = Integer.parseInt(args[0]);

        int count = 0;
        System.out.println("Prime Table\n===========");
        for (int n = 2; n <= maxN; n++) {
            int d;
            for (d = 2; d < n; d++) {
                if (n % d == 0)
                    break;
            }
            if (d == n) {
                System.out.printf("%5d", n);
                count++;
                if (count == 10) {
                    System.out.println();
                    count = 0;
                }
            }
        }
        if (count < 10)
            System.out.println();
    }
}