//Programmed by Chris Hayes
//Extra credit attempted
   import java.util.Scanner;
   public class IntFun
   {
      public static void main(String[] args)
      {
         Scanner kb = new Scanner(System.in);
         int choice = 6;
         int num;
         
         System.out.println("Enter a positive integer ");
         num = kb.nextInt();
         kb.nextLine();
         while(num < 0)
         {
            System.out.println("Sorry, the integer needs to be positive, try again ");
            num = kb.nextInt();
         }
         
         while(choice > 0 && choice != 5)
         { 
            System.out.println("1. Enter a new number ");
            System.out.println("2. Print the number of odd digits, even digits and zeroes in the integer ");
            System.out.println("3. Print the prime numbers between 2 and the integer ");
            System.out.println("4. Print the sum of the digits of the integer ");
            System.out.println();
            System.out.println("5. Quit the program ");
            
            System.out.println();
            System.out.println("Enter your choice ");
            
            choice = kb.nextInt();
            kb.nextLine();
          
            if(choice == 1)
            {
               System.out.println("Enter the new number ");
               num = kb.nextInt();
               kb.nextLine();
            }
            else if(choice == 2)
            {
               oddEven(num);
            }
            else if(choice == 3)
            {
               prime(num);
            }
            else if(choice == 4)
            {
               sum(num);
            }
         }
      }
      private static void oddEven(int num)
      {
         int evens = 0;
         int odds = 0;
         int zeroes = 0;
       
         while(num > 0)
         {
            int digit = num % 10;
          
            if(digit == 0)
            {
               zeroes++;
            }
            else if(digit % 2 == 0)
            {
               evens++;
            }
            else
            {
               odds++;
            }
         }
         num = num / 10;
         System.out.println("Here is the answer: " + evens + " evens, " + odds + " odds " + zeroes + " zeroes ");
         System.out.println();
      }
      private static void prime(int num)//Thanks too jjMckee for help on this
      {
         int inner = 0;
         int outer = 0;
         String primeNum = "";
       
         for(outer = 2; outer <= num; outer++)
         {
            boolean prime = true;
          
            for(inner = outer / 2; inner >= 2; inner--)
            {
               if(outer % inner == 0)
               {
                  prime = false;
               }
            }
            if(prime == true)
            {
               primeNum = primeNum + outer + " ";
            }
         }
         System.out.println("Prime not including 2: " + primeNum);
      }
      private static void sum(int num)
      {
         int digit;
         int sum = 0;
         int divisor = 10000000;
       
         while(divisor > 0)
         {
            digit = num / divisor;
            sum = sum + digit;
            num = num % divisor;
            divisor = divisor / 10;
         }
         System.out.println("The sum of the digit's is " + sum);
      }
   }