public class ImprovedDigits2
{
  public static void main(String args[]){
    // print the digits of a number
    int x = 6002;
    
    // first find the number of digits
    int z = x;
    int num_digits;
    for(num_digits = 0; z != 0; z /= 10, num_digits++);
    
    System.out.println("The number of digits in "+x+" are "+num_digits+".");
    
    System.out.print(x+" = ");
    z = x;
    for(int i = num_digits-1; i >= 0; i--){
      int div = 1;
      for(int j = 0; j < i; j++)
        div *= 10;
        
      //The change in logic is in from this:
      //printDigit(z/div);
      //to:
      if(div >= 100 && z/div != 0){
        printDigit(z/div);
        printOrder(div);
      }else if(z >= 20){
        printSecond(z/div);
      }else{
        printTeens(z);
        break;
      }
      //this.

      z %= div;
    }
    System.out.println(".");
  }

  static void printOrder(int x){
    if(x == 1000)
      System.out.print("thousand ");
    else if(x == 100)
      System.out.print("hundred ");
    else
      System.out.print("* ");
  }
  
  static void printTeens(int x){
    if(x < 10){
      printDigit(x);
      return;
    }
    switch(x){
        case 10:
          System.out.print("ten ");
          break;
        case 11:
          System.out.print("eleven ");
          break;
        case 12:
          System.out.print("twelve ");
          break;
        case 13:
          System.out.print("thirteen ");
          break;
        case 14:
          System.out.print("fourteen ");
          break;
        case 15:
          System.out.print("fifteen ");
          break;
        case 16:
          System.out.print("sixteen ");
          break;
        case 17:
          System.out.print("seventeen ");
          break;
        case 18:
          System.out.print("eighteen ");
          break;
        case 19:
          System.out.print("nineteen ");
          break;
        default:
          System.out.print("* ");
     }
  }

  static void printSecond(int x){
    switch(x){
        case 0:
          //System.out.print("zero ");
          break;
        case 1:
          System.out.print("* ");
          break;
        case 2:
          System.out.print("twenty ");
          break;
        case 3:
          System.out.print("thirty ");
          break;
        case 4:
          System.out.print("forty ");
          break;
        case 5:
          System.out.print("fifty ");
          break;
        case 6:
          System.out.print("sixty ");
          break;
        case 7:
          System.out.print("seventy ");
          break;
        case 8:
          System.out.print("eighty ");
          break;
        case 9:
          System.out.print("ninety ");
          break;
        default:
          System.out.print("* ");
     }
  }
  
  static void printDigit(int x){
    switch(x){
        case 0:
          //System.out.print("zero ");
          break;
        case 1:
          System.out.print("one ");
          break;
        case 2:
          System.out.print("two ");
          break;
        case 3:
          System.out.print("three ");
          break;
        case 4:
          System.out.print("four ");
          break;
        case 5:
          System.out.print("five ");
          break;
        case 6:
          System.out.print("six ");
          break;
        case 7:
          System.out.print("seven ");
          break;
        case 8:
          System.out.print("eight ");
          break;
        case 9:
          System.out.print("nine ");
          break;
        default:
          System.out.print("* ");
     }
  }
}