/* CS102 -- Jim Plank */

/* This program does a "master mind"-like program.  It assumes
   that the user will enter a three-digit number, where all three
   digits are different.  It then compares it to a known number (567),
   and if the user's guess is not correct, it tells the user how many
   digits are correct, and how many digits are correct and in the 
   correct position.  Note the use of integer division, and the mod
   operator to grab the right (ar), middle (am) and left (al) digits
   of the answer, and the guess (dr, dm and dl).
 */

#include <iostream>
using namespace std;

main()
{
  int answer = 567;
  int guess;
  int number;
  int right;
  int dr, dm, dl;
  int ar, am, al;
  int correct_number;
  int correct_position;

  ar = answer % 10;
  al = answer / 100;
  am = (answer / 10) % 10;

  number = 1;
  right = 0;

  while (!right) {
    cout << "Guess #" << number << ": Enter a number between 0 and 999: ";
    cin >> guess;
    
    if (guess >= 0 && guess <= 999) {
      if (guess == answer) {
        cout << "Right!  You took " << number << " move";
        if (number != 1) cout << "s" ;
        cout << "." << endl;
        right = 1;
      } else {

        dr = guess % 10;
        dl = guess / 100;
        dm = (guess / 10) % 10;

        correct_position = 0;
        if (dr == ar) correct_position++;
        if (dl == al) correct_position++;
        if (dm == am) correct_position++;
        
        correct_number = 0;
        if (dr == ar || dr == am || dr == al) correct_number++;
        if (dm == ar || dm == am || dm == al) correct_number++;
        if (dl == ar || dl == am || dl == al) correct_number++;

        cout << "Correct position: " << correct_position << endl;
        cout << "Correct number:   " << correct_number << endl;
      }
    } else {
      cout << "Between 1 and 999, please.\n";
    }
    number++;
  }
   
  return 0;
}