Question

C++

The program will call the start_game function with argument O or X to indicate first player and will keep track of the next player while players take turns marking the board until the board is full. This version of the game only plays one game.

Class Specifications

TicTacToe class does not have a constructor.
Member Functions and Member(variable) Specifications
+ = public
- = private

public/private	New /Update/NoUpdate		Function/Data Member	Functionality of function or data member
+	New		bool game_over	No parameters 1) return check_board_full function return value
+	Update		void start_game(string first_player)	1) first_player function argument value must be X or O; otherwise, throw an Error exception when value is not X or O. Error Message: Player must be X or O. 2)In function set player(private variable) to first_player function argument. 3) After the conditional branch statement, call the clear_board function
+			void mark_board(int position)	1) Value of int must be in the range 1 to 9; otherwise, throw an Error exception if value not in this range. Error Message: Position must be 1 to 9. 2) Private data player can’t be empty “”, throw an Error exception if player variable is “”. Error Message: Must start game first. 3) Call set_next_player private function
+			string get_player() const	Return the next_player value
+	New		void display_board const	No parameters Iterate vector of strings pegs to Display a tic tac toe board in 3x 3 format
		private functions
-			void set_next_player()	Set next_player. If private variable player X, player is O else player is X
-	New		void check_board_full	No parameters 1) return false if vector of strings pegs has available slot by checking for a “ “(space)in each element. Otherwise return true
-	New		void clear_board const	No parameters 1) Set all 9 elements to a “ “ (space)
			Class private Data
-			string player	Class member variable
	New		vector of string pegs	Class member variable 1) (initialize to 9 “ “(spaces)

UNIT TEST CASES

Required Test Cases for Assignment (write the code in /homeworks/tic_tac_toe_test/ tic_tac_toe_test.cpp)

Test Case Name	Steps to Test
Test Mark Position accepts values from 1 to 9 only	1) Create an instance of TicTacToe game 2) Call the start game function 3) Use REQUIRE_THROWS_AS to verify game.mark_position(0) throws an Error 4) Use REQUIRE_THROWS_AS to verify game.mark_position(10) throws an Error 5) Call mark board 5 to show that an Error is not thrown.
Test game over if 9 slots are selected.	1)Create an instance of TicTacToe game 2)Call the start game function 3)Call mark board 9 times using numbers 1 to 9 in the following order(this test case will eventually be the test for CAT tie case)

Answer 1

I develop code different way please see

first import header file , create global variable

function to show the current status of the gaming board

function name is display_board()....

function to get the player input and update the board

function name is player_turn().....

continue above function

function to get the game status e.g. GAME WON, GAME DRAW, GAME IN CONTINUE MODE

function name is gameover()....

main method...

output view

GAME DRAW

GAME WON

crazy code......!!