import java.util.Scanner;  // Needed for accepting input
import java.text.*;
import java.lang.Math.*;
 public class ProjectOneAndreD
 {


    public static void main(String[] args)
    {
        String input1;
        char coln = ':';
        int val=0, rad=0, check1=0;
        double answer1=0, answer2=0;


            Scanner keyboard = new Scanner(System.in);  //creates new scanner class

            do
        {
            System.out.println("****************************************************");
            System.out.println("             This is Project 1. Enjoy!              ");     //title
            System.out.println("****************************************************\n\n");

            System.out.println("Enter a number, : and then the radix, followed by the Enter key.");
            System.out.println("INPUT EXAMPLE:  160:2   {ENTER} ");     //example

            System.out.print("INPUT:  ");               //prompts user input.
            input1 = keyboard.nextLine();       //assigns input to string input1


            check1=input1.indexOf(coln);

            if(check1==-1)
            {
                System.out.println("I think you forgot the ':'.");

            }
            else
            {
                String numbers [] = input1.split(":"); //if the user enter 1123:2342 this method

                //will
                // return array of String which contains two elements numbers[0] = "1123" and numbers[1]="2342"

                    val = Integer.parseInt(numbers[0]);   //parses [0] to int and assigns to val
                    rad = Integer.parseInt(numbers[1]);     //parses [1] to int and assigns to val
                    answer1 = ((Math.log(val))/(Math.log(rad)));    //mathematically finds first base then
                    answer2 = ((Math.log(answer2))/(Math.log(10)));
                    System.out.println(val+" base "+rad+" is "+answer2+" base 10.");
            }
                }while(check1==-1);

    }
 }