System.out.println( "zadejte hodnotu z intervalu <0,511>:" );
  Scanner sc = new Scanner( System.in );
  int n = sc.nextInt();
  int i = n;
  int c1 = i / 64;
  i %= 64;
  int c2 = i / 8;
  int c3 = i % 8;
  System.out.printf( "%d desítkově je %d%d%d osmičkově%n", n, c1, c2, c3 );