class Testing {
 public static void main(String args[]) {

   int e;
   int result;

   for(int i = 0; i < 10; i++) {
     result = 1;
     e = i;
      while(e > 0) {
        result *= 2;
         e--;
      }

      System.out.println("2 to the " + i + " power is " + result);
  }
 }