Task3.cpp

#include <iostream>
using namespace std;

char board[3][3]; 
char currentPlayer;

void initializeBoard() {
    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 3; j++) {
            board[i][j] = ' ';
        }
    }
}

void displayBoard() {
    cout << "-------------\n";
    for (int i = 0; i < 3; i++) {
        cout << "| ";
        for (int j = 0; j < 3; j++) {
            cout << board[i][j] << " | ";
        }
        cout << "\n-------------\n";
    }
}

void switchPlayer() {
    currentPlayer = (currentPlayer == 'X') ? 'O' : 'X';
}

bool checkWin() {
    for (int i = 0; i < 3; i++) {
        if (board[i][0] == currentPlayer && board[i][1] == currentPlayer && board[i][2] == currentPlayer)
            return true;
    }
    for (int i = 0; i < 3; i++) {
        if (board[0][i] == currentPlayer && board[1][i] == currentPlayer && board[2][i] == currentPlayer)
            return true;
    }
    if (board[0][0] == currentPlayer && board[1][1] == currentPlayer && board[2][2] == currentPlayer)
        return true;
    if (board[0][2] == currentPlayer && board[1][1] == currentPlayer && board[2][0] == currentPlayer)
        return true;

    return false;
}

bool checkDraw() {
    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 3; j++) {
            if (board[i][j] == ' ')
                return false;
        }
    }
    return true;
}

void playerMove() {
    int row, col;
    while (true) {
        cout << "Player " << currentPlayer << ", enter row (1-3) and column (1-3): ";
        cin >> row >> col;
        row--;
        col--;

        if (row >= 0 && row < 3 && col >= 0 && col < 3 && board[row][col] == ' ') {
            board[row][col] = currentPlayer;
            break;
        } else {
            cout << "Invalid move! Try again.\n";
        }
    }
}

int main() {
    char playAgain;

    do {
        initializeBoard();
        currentPlayer = 'X';
        bool gameOver = false;

        while (!gameOver) {
            displayBoard();
            playerMove();

            if (checkWin()) {
                displayBoard();
                cout << "Player " << currentPlayer << " wins!\n";
                gameOver = true;
            } else if (checkDraw()) {
                displayBoard();
                cout << "It's a draw!\n";
                gameOver = true;
            } else {
                switchPlayer();
            }
        }

        cout << "Do you want to play again? (y/n): ";
        cin >> playAgain;

    } while (playAgain == 'y' || playAgain == 'Y');

    cout << "Thank you for playing!\n";

}