Untitled

// Online C++ compiler to run C++ program online
#include <iostream>
using namespace std;

char board[3][3] = { {'1','2','3'}, {'4','5','6'}, {'7','8','9'} };
char currentMarker;
int currentPlayer;

void drawBoard() {
    cout << " " << board[0][0] << " | " << board[0][1] << " | " << board[0][2] << endl;
    cout << "---|---|---" << endl;
    cout << " " << board[1][0] << " | " << board[1][1] << " | " << board[1][2] << endl;
    cout << "---|---|---" << endl;
    cout << " " << board[2][0] << " | " << board[2][1] << " | " << board[2][2] << endl;
}

bool placeMarker(int slot) {
    int row = (slot - 1) / 3;
    int col = (slot - 1) % 3;

    if (board[row][col] != 'X' && board[row][col] != 'O') {
        board[row][col] = currentMarker;
        return true;
    } else {
        return false;
    }
}

int winner() {
    for (int i = 0; i < 3; i++) {
        // Check rows and columns
        if (board[i][0] == board[i][1] && board[i][1] == board[i][2]) return currentPlayer;
        if (board[0][i] == board[1][i] && board[1][i] == board[2][i]) return currentPlayer;
    }

    // Check diagonals
    if (board[0][0] == board[1][1] && board[1][1] == board[2][2]) return currentPlayer;
    if (board[0][2] == board[1][1] && board[1][1] == board[2][0]) return currentPlayer;

    return 0;
}

void swapPlayerAndMarker() {
    if (currentMarker == 'X') currentMarker = 'O';
    else currentMarker = 'X';

    currentPlayer = (currentPlayer == 1) ? 2 : 1;
}

void game() {
    cout << "Player 1, choose your marker: X or O: ";
    char markerP1;
    cin >> markerP1;

    currentPlayer = 1;
    currentMarker = markerP1;

    drawBoard();

    int playerWon;

    for (int i = 0; i < 9; i++) {
        cout << "It's player " << currentPlayer << "'s turn. Enter your slot: ";
        int slot;
        cin >> slot;

        if (slot < 1 || slot > 9) {
            cout << "Invalid slot! Try again.\n";
            i--;
            continue;
        }

        if (!placeMarker(slot)) {
            cout << "Slot already taken! Try again.\n";
            i--;
            continue;
        }

        drawBoard();

        playerWon = winner();
        if (playerWon == 1) { cout << "Player 1 wins!\n"; break; }
        if (playerWon == 2) { cout << "Player 2 wins!\n"; break; }

        swapPlayerAndMarker();
    }

    if (playerWon == 0) {
        cout << "It's a tie!\n";
    }
}

int main() {
    game();
    return 0;
}