I need help with this C++ Tic Tac Toe program.

//// TicTacToe.cpp: Follow along with the comments to create a fully functional Tic Tac Toe game // that uses function calls. Each function will get called multiple times during the execution // of the code, however, the code itself only needed to be written once. Also notice the use of // an array to store the contents of the board. The comments marked with a TODO denote where code // needs to be added.

#include "stdafx.h"

#include

using namespace std;

char boardTile[10] = { 'o', '1', '2', '3', '4', '5', '6', '7', '8', '9' };

//Write the function declarations

bool checkValidMove(int);

void drawboard();

//TODO: Write the declaration for the function that checks for a winner

int main()

{

int player = 1, i, choice;

char mark;

bool isMoveValid = false;

do {

//TODO: Call the function that draws the game board

drawBoard();

player = (player % 2) ? 1 : 2;

cout << "Player " << player << ", enter a number: ";

cin >> choice;

mark = (player == 1) ? 'X' : 'O';

//TODO: Call the checkValidMove function, make sure to save the return value in one of the variables

while (*(checkValidMove) == false)

if (isMoveValid) {

boardTile[choice] = mark;

}

else {

cout << "Invalid move ";

player--;

cin.ignore();

cin.get();

}

i = checkForWinner();

player++;

} while (i == -1);

drawBoard();

if (i == 1) cout << "==>Player " << --player << " wins!";

else cout << "==>Game draw";

cin.ignore();

cin.get();

return 0;

}

// Check the board for a winner.

// Returning a -1 is keep playing

// Returning a 0 is a draw (or cat wins)

// Returning a 1 shows a winner

int checkForWinner()

{

//TODO: Read through the code in this function. Based on the commented rules before the function, determine

//what type of return statement belongs in each of the comments below.

if ((boardTile[1] == boardTile[2] && boardTile[2] == boardTile[3]) || (boardTile[4] == boardTile[5] && boardTile[5] == boardTile[6]) || (boardTile[7] == boardTile[8] && boardTile[8] == boardTile[9]) || (boardTile[1] == boardTile[4] && boardTile[4] == boardTile[7]) || (boardTile[2] == boardTile[5] && boardTile[5] == boardTile[8]) || (boardTile[3] == boardTile[6] && boardTile[6] == boardTile[9]) || (boardTile[1] == boardTile[5] && boardTile[5] == boardTile[9]) || (boardTile[3] == boardTile[5] && boardTile[5] == boardTile[7]))

{

//Insert return statement

return -1;

} else if (boardTile[1] != '1' && boardTile[2] != '2' && boardTile[3] != '3' && boardTile[4] != '4' && boardTile[5] != '5' && boardTile[6] != '6' && boardTile[7] != '7' && boardTile[8] != '8' && boardTile[9] != '9')

{

//Insert return statement

return 1;

}

else

{

//Insert return statement

return 0;

}

}

// Draw the board with the player marks

void drawBoard()

{

system("cls");

cout << " \tTic Tac Toe ";

cout << "Player 1 has 'X' - Player 2 has 'O'" << endl << endl; cout << endl;

cout << " | | " << endl; cout << " " << boardTile[1] << " | " << boardTile[2] << " | " << boardTile[3] << endl; cout << "_____|_____|_____" << endl; cout << " | | " << endl;

cout << " " << boardTile[4] << " | " << boardTile[5] << " | " << boardTile[6] << endl; cout << "_____|_____|_____" << endl; cout << " | | " << endl; cout << " " << boardTile[7] << " | " << boardTile[8] << " | " << boardTile[9] << endl; cout << " | | " << endl << endl;

}

//Check if the player's move is valid or if the tile has already been taken

//TODO: Based on the function initiation at the beginning of the program, write the function signature, make sure the variable names are consistent /*while ( !checkValidMove()) { i = checkForWinner(); } // while does not work*/

{

bool isValid = false;

char aChar = '0' + choice;

if (choice > 0 && choice <= 9)

{

if (boardTile[choice] == aChar)

{

isValid = true;

}

else {

return false;

}

return isValid;

}