/**



 * The computer picks heads (true) or tails (false).  The user guesses.



 */







import java.util.Scanner;







public class MindReaderWhileLoop2 {



  



  public static void main(String[] args) { 



    



    String computerChoice;  // true means heads



    String userChoice;  // true means heads



    Scanner in = new Scanner(System.in);



    



    int computerScore = 0;



    int userScore = 0;



    



    while(true) { 



      



      // Prompt user for their guess



      System.out.println("What do you believe the computer chose?: h=heads, t=tails, q=quit): ");



      String userInput = in.next();



      String first = userInput.substring(0,1);



      if (first.equalsIgnoreCase("h") ) userChoice = "heads";



      else if (first.equalsIgnoreCase("t")) userChoice = "tails";  



      else {



        userChoice = "quit" ;



        System.out.println("Good-bye");



        break;



      }



      



      // Computer picks choice.



      if (Math.random() < .5) computerChoice = "heads";



      else computerChoice = "tails";



      



      System.out.print("The computer chose " + computerChoice);



      System.out.println(" and you guessed " + userChoice + ".");



      



      // Check who won.



      if ( computerChoice.equals(userChoice) ) {



        System.out.println("You are correct - CONGRATULATIONS!");



        userScore++;



      }



      else {



        System.out.println("Sorry, you are wrong. Better luck next time.");



        computerScore++;



      }



      System.out.println("User Score: " + userScore + "\t\tComputer Score: " + computerScore);



       



    }  



  }



}