//Jordan Rust, Assignment 3, 11:00 AM, EXTRA CREDIT ATTEMPTED

import java.util.*;

public class IntFun
{
    public static void main (String[] args)
    {
        Scanner kb = new Scanner(System.in);

        //List of all variables.
        int startNum = 0;
        int userNum = 0;
        int odds = 0;
        int evens = 0;
        int zeroes = 0;
        int digit = 0;
        int sum = 0;
        int primeStart;

        //Start of the menu, just to be polite.
        System.out.println("Hello there. Welcome to the number menu.");

        //Gets the user's first integer.
        System.out.println("Please enter a positive integer: ");
        startNum = kb.nextInt();

        //Makes sure the integer is positive.
        if(startNum < 0)
        {
            System.out.println("That isn't a positive integer, please try again.");
            startNum = kb.nextInt();
        }

        //Prints the menu and offers the choice selection.
        if(startNum > 0)
        {
            System.out.println("1.Enter a new number.\n2.Print the number of odd digits, even digits and zereos in the integer.\n3.Print the prime numbers between 2 and the integer.\n4.Print the sum of the digits in the integer.\n5.Quit the program.");
            System.out.println("Your choice please: ");
            userNum = kb.nextInt();
        }

        //Fulfills option one of the menu.
        if(userNum == 1)
        {
            System.out.println("Your new positive integer please: ");
            startNum = kb.nextInt();
        }

        //Fulfills option two of the menu.
        if(userNum == 2)
        {
            boolean isSignificant = false;
            int divisor = 100000000;
            while(divisor > 0)
            {
                digit = startNum/divisor;
                if(digit == 0 && isSignificant == true)
                    zeroes ++;
                else if(digit%2 == 0)
                    evens ++;
                    isSignificant = true;
                if(digit%2 != 0)
                    odds ++;
                    isSignificant = true;
                startNum = startNum % divisor;
                divisor = divisor/10;
            }

            System.out.println("Evens: " + evens + " Odds: " + odds + " Zeroes: " + zeroes);
        }

        //Fulfills option three of the menu.
        if(userNum == 3)
        {
            System.out.println("The prime numbers are: ");

            for (primeStart = 2; primeStart < startNum; primeStart++ )
            {
                int primeSearch;
                for (primeSearch = 2; primeSearch < primeStart; primeSearch++)
                {
                    int primes = primeStart%primeSearch;
                    if (primes == 0)
                    {
                        break;
                    }
                }
                if(primeStart == primeSearch)
                {
                    System.out.print(" " + primeStart);
                }
            }
        }

        //Fulfills option four of the menu.
        if(userNum == 4)
        {
            int num = startNum;
            while(num > 0)
            {
                digit = num%10;
                sum += digit;
                num = num/10;
            }

            System.out.println("The sum is: " + sum);
        }

        //Fulfills option five of the menu.
        if(userNum == 5)
        {
            System.out.println("You've chosen to quit. Have a nice day!");
        }

    }

}