PROGRAM CODE:

//Header section
#include <iostream>
using namespace std;
// Function to display the tic-tac-toe board
void displayBoard(const char board[]) {
    cout << board[0] << " " << board[1] << " " << board[2] << endl;
    cout << board[3] << " " << board[4] << " " << board[5] << endl;
    cout << board[6] << " " << board[7] << " " << board[8] << endl;
}

// Function to check if a player has won
bool checkWin(const char board[], char player) {
    // Check rows
    for (int i = 0; i < 3; i++) {
        if (board[i] == player && board[i + 3] == player && board[i + 6] == player) {
            return true;
        }
    }
    
    // Check columns
    for (int i = 0; i < 3; i++) {
        if (board[i * 3] == player && board[i * 3 + 1] == player && board[i * 3 + 2] == player) {
            return true;
        }
    }
    
    // Check diagonals
    if ((board[0] == player && board[4] == player && board[8] == player) ||
        (board[2] == player && board[4] == player && board[6] == player)) {
        return true;
    }
    
    return false;
}

int main() {
    char board[9] = {'1', '2', '3', '4', '5', '6', '7', '8', '9'};
    char currentPlayer = 'X';
    int move;
    
    cout << "Let's play Tic-Tac-Toe!" << endl;
    
    while (true) {
        displayBoard(board);
        
        cout << "Player " << currentPlayer << ", enter your move: ";
        cin >> move;
        
        // Update the board with the player's move
        board[move - 1] = currentPlayer;
        
        // Check if the current player has won
        if (checkWin(board, currentPlayer)) {
            displayBoard(board);
            cout << "Player " << currentPlayer << " wins!" << endl;
            break;
        }
        
        // Switch players for the next turn
        currentPlayer = (currentPlayer == 'X') ? 'O' : 'X';
    }
    
    return 0;
}

OUTPUT OF THE PROGRAM CODE:

Let's play Tic-Tac-Toe!
1 2 3
4 5 6
7 8 9
Player X, enter your move: 1
X 2 3
4 5 6
7 8 9
Player O, enter your move: 5
X 2 3
4 O 6
7 8 9
Player X, enter your move: 9
X 2 3
4 O 6
7 8 X
Player O, enter your move: 4
X 2 3
O O 6
7 8 X
Player X, enter your move: 3
X 2 X
O O 6
7 8 X
Player X wins!