TICTACTOE game include include include include include using

//TIC-TAC-TOE [game]

#include <iostream>
#include <string>
#include <sstream>
#include <ctime>
#include <cstdlib>

using namespace std;

const int SIZE = 3;

void displayBoard(string b[][SIZE]);
bool userFirst();
bool currentPlayerWon(string b[][SIZE], string symbol);

int main() {
//construct board
string board[SIZE][SIZE];

int position_id = 1;
for (int i=0; i< SIZE; i++) {
for (int j=0; j < SIZE; j++) {
board[i][j] = to_string(position_id);
/* stringstream ss;
ss << position_id;
board[i][j] = ss.str();
*/position_id++;
}
}

//Initial game output
cout << \"Welcome to Tic-Tac-Toe\" << endl;

bool userTurn = userFirst();
if (userTurn == true) {
cout << \"Player goes first!\" << endl;
} else {
cout << \"Computer goes first!\" << endl;
}

//Loop for turn taking in game
int positionsRemaining = SIZE * SIZE;
bool userWon = false;
bool computerWon = false;

while ((positionsRemaining > 0)
&& (!userWon) && (!computerWon)) {
displayBoard(board);

//User\'s turn
if (userTurn) {
bool validMove = false;
while (!validMove) {
int position_id;
cout << \"Enter a position: \";
cin >> position_id;
if ((position_id <= (SIZE*SIZE))
&& (position_id > 0)) {
int row = (position_id-1)/SIZE;
int col = (position_id-1)%SIZE;
//cout << \"row = \" << row << \" col = \" << col << endl;
if ((board[row][col] != \"X\")
&& (board[row][col] != \"O\")) {
board[row][col] = \"X\";
validMove = true;
} else {
cout << \"Position already used. Try again.\" << endl;
}

} else {
cout << \"Position invalid. Try again.\" << endl;
}
}
positionsRemaining--;
userWon = currentPlayerWon(board, \"X\");
userTurn = false;
}

//Computer\'s turn
else {
bool validMove = false;
while (!validMove) {
int row = rand()%SIZE;
int col = rand()%SIZE;
if ((board[row][col] != \"X\")
&& (board[row][col] != \"O\")) {
board[row][col] = \"O\";
validMove = true;
}
}
positionsRemaining--;
computerWon = currentPlayerWon(board, \"O\");
userTurn = true;
}
}

//Display game result
displayBoard(board);
if (userWon) {
cout << \"Congratulations! You have won!\" << endl;
} else if (computerWon) {
cout << \"The computer has won. Try again.\" << endl;
} else {
cout << \"Out of moves. Try again.\" << endl;
}
return 0;
}

void displayBoard(string b[][SIZE]) {
cout << \"Tic-tac-toe board:\" << endl << endl;
for (int i=0; i< SIZE; i++) {
for (int j=0; j < SIZE; j++) {
cout << b[i][j] << \"\\t\";
}
cout << endl;
}
cout << endl;
}

bool userFirst() {
//set seed for random number generation
srand(time(NULL));

//generate a random number
//0 for computer
//1 for user
int num = rand()%2;
if (num == 0) {
return false;
}
return true;
}

//Return true if player/computer with symbol (X or O) has won
bool currentPlayerWon(string b[][SIZE], string symbol) {
//Horizontal case
//Loop through each row
for (int i=0; i < SIZE; i++) {
bool rowWinDetected = true;
//Check all positions in row and see if they are the same symbol
for (int j = 0; j < SIZE; j++) {
if (b[i][j] != symbol) {
rowWinDetected = false;
}
}
if (rowWinDetected) {
return true;
}
}

//Vertical case
//Loop through each column
for (int i=0; i < SIZE; i++) {
bool colWinDetected = true;
//Check all positions in column and see if they are the same symbol
for (int j = 0; j < SIZE; j++) {
if (b[j][i] != symbol) {
colWinDetected = false;
}
}
if (colWinDetected) {
return true;
}
}

//Diagonal case #1
bool diagonal1WinDetected = true;
for (int i=0; i < SIZE; i++) {
if (b[i][i] != symbol) {
diagonal1WinDetected = false;
}
}
if (diagonal1WinDetected) {
return true;
}

//Diagonal case #2
bool diagonal2WinDetected = true;
for (int i=0; i < SIZE; i++) {
if (b[(SIZE-1)-i][i] != symbol) {
diagonal2WinDetected = false;
}
}
if (diagonal2WinDetected) {
return true;
}

//otherwise win not diagonal2WinDetected
return false;

}

You should start by downloading the tictactoe final.cpp program This program uses a two-dimensional array for the tic-tac-toe board that is implemented using an ordinary (automatic) variable: string board SIZE] [SIZE modify the board array to be implemented using dynamic variables and update the rest of the program accordingly. (Hint: a two-dimensional dynamic array is created using a pointer to an array of pointers)

Solution

Here is the modified version for you:

//TIC-TAC-TOE [game]
#include <iostream>
#include <string>
#include <sstream>
#include <ctime>
#include <cstdlib>
using namespace std;
const int SIZE = 3;
void displayBoard(string **b);
bool userFirst();
bool currentPlayerWon(string **b, string symbol);
int main() {
//construct board
//string board[SIZE][SIZE];
string **board;
board = (string **)malloc((SIZE-1)*sizeof(string *));
for (int i=0;i<SIZE-1;i++)
board[i] = (string *)malloc((SIZE-1)*sizeof(string));
int position_id = 1;
for (int i=0; i< SIZE; i++) {
for (int j=0; j < SIZE; j++) {
board[i][j] = to_string(position_id);
/* stringstream ss;
ss << position_id;
board[i][j] = ss.str();
*/position_id++;
}
}
//Initial game output
cout << \"Welcome to Tic-Tac-Toe\" << endl;
bool userTurn = userFirst();
if (userTurn == true) {
cout << \"Player goes first!\" << endl;
} else {
cout << \"Computer goes first!\" << endl;
}
//Loop for turn taking in game
int positionsRemaining = SIZE * SIZE;
bool userWon = false;
bool computerWon = false;
while ((positionsRemaining > 0)
&& (!userWon) && (!computerWon)) {
displayBoard(board);
//User\'s turn
if (userTurn) {
bool validMove = false;
while (!validMove) {
int position_id;
cout << \"Enter a position: \";
cin >> position_id;
if ((position_id <= (SIZE*SIZE))
&& (position_id > 0)) {
int row = (position_id-1)/SIZE;
int col = (position_id-1)%SIZE;
//cout << \"row = \" << row << \" col = \" << col << endl;
if ((board[row][col] != \"X\")
&& (board[row][col] != \"O\")) {
board[row][col] = \"X\";
validMove = true;
} else {
cout << \"Position already used. Try again.\" << endl;
}
} else {
cout << \"Position invalid. Try again.\" << endl;
}
}
positionsRemaining--;
userWon = currentPlayerWon(board, \"X\");
userTurn = false;
}
//Computer\'s turn
else {
bool validMove = false;
while (!validMove) {
int row = rand()%SIZE;
int col = rand()%SIZE;
if ((board[row][col] != \"X\")
&& (board[row][col] != \"O\")) {
board[row][col] = \"O\";
validMove = true;
}
}
positionsRemaining--;
computerWon = currentPlayerWon(board, \"O\");
userTurn = true;
}
}
//Display game result
displayBoard(board);
if (userWon) {
cout << \"Congratulations! You have won!\" << endl;
} else if (computerWon) {
cout << \"The computer has won. Try again.\" << endl;
} else {
cout << \"Out of moves. Try again.\" << endl;
}
return 0;
}
void displayBoard(string **b) {
cout << \"Tic-tac-toe board:\" << endl << endl;
for (int i=0; i< SIZE; i++) {
for (int j=0; j < SIZE; j++) {
cout << b[i][j] << \"\\t\";
}
cout << endl;
}
cout << endl;
}
bool userFirst() {
//set seed for random number generation
srand(time(NULL));
//generate a random number
//0 for computer
//1 for user
int num = rand()%2;
if (num == 0) {
return false;
}
return true;
}
//Return true if player/computer with symbol (X or O) has won
bool currentPlayerWon(string **b, string symbol) {
//Horizontal case
//Loop through each row
for (int i=0; i < SIZE; i++) {
bool rowWinDetected = true;
//Check all positions in row and see if they are the same symbol
for (int j = 0; j < SIZE; j++) {
if (b[i][j] != symbol) {
rowWinDetected = false;
}
}
if (rowWinDetected) {
return true;
}
}
//Vertical case
//Loop through each column
for (int i=0; i < SIZE; i++) {
bool colWinDetected = true;
//Check all positions in column and see if they are the same symbol
for (int j = 0; j < SIZE; j++) {
if (b[j][i] != symbol) {
colWinDetected = false;
}
}
if (colWinDetected) {
return true;
}
}
//Diagonal case #1
bool diagonal1WinDetected = true;
for (int i=0; i < SIZE; i++) {
if (b[i][i] != symbol) {
diagonal1WinDetected = false;
}
}
if (diagonal1WinDetected) {
return true;
}
//Diagonal case #2
bool diagonal2WinDetected = true;
for (int i=0; i < SIZE; i++) {
if (b[(SIZE-1)-i][i] != symbol) {
diagonal2WinDetected = false;
}
}
if (diagonal2WinDetected) {
return true;
}
//otherwise win not diagonal2WinDetected
return false;
}