Chapter 8, Problem 8.9PE

Program Plan Intro

Game: play a tic-tac-toe game

Program Plan:

• Include the necessary package.
• Define the class named “Exercise08_09”.
  • Declare the object “obj” for scanner class.
  • Define the main method.
    • Declare a variable “brd” for grid board.
    • Call the method “printBoard()” to print the board on screen.
    • Define the “while” loop.
      • Call the method “user_move()” which takes board and symbol.
      • Call the method “printBoard()”.
      • Using “if…else” condition to call the function “check_Won()”.
        • If the condition is true, print “X player won” statement on screen and exit the code.
          • Otherwise, check the “if” condition and call the function “check_draw()”.
            • Print “No winner” on screen and exit the code.
  • Define the method “user_move()” which takes board and user’s symbol.
    • Declare the Boolean variable “done” and assign “false” on screen.
    • Define “do…while” loop.
      • Inside the loop, prompt the value of variables “row” and “column” from user.
      • Using “if…else” condition, initialize the user’s symbol into board and assign “true” to variable “done”.
        • Otherwise, print the statement.
  • Define the method “printBoard()” which takes the board as input.
    • Using “for” loop, print the board with symbols on screen.
  • Define the method “check_won()” which takes character symbol and board as arguments.
    • Using “for” loop and “if” condition, check the values for row, column, major diagonal, and sub diagonal grid values.
  • Define the method “check_draw()” which takes board as input.
    • Using “for” loops, check the grid values.