#include <iostream>
#include <vector>
using namespace std;
// Function prototypes
void printBoard(const vector<vector<char>> &board);
bool isMoveValid(const vector<vector<char>> &board, int row, int col);
bool isGameOver(const vector<vector<char>> &board, char &winner);
void makeMove(vector<vector<char>> &board, int row, int col, char currentPlayer);
int main() {
vector<vector<char>> board(3, vector<char>(3, ' ')); // 3x3 game board
char currentPlayer = 'X';
char winner = ' ';
cout << "Welcome to Tic-Tac-Toe!\n";
do {
printBoard(board);
int row, col;
cout << "Player " << currentPlayer << ", enter your move (row and column): ";
cin >> row >> col;
if (isMoveValid(board, row, col)) {
makeMove(board, row, col, currentPlayer);
if (isGameOver(board, winner)) {
break;
}
currentPlayer = (currentPlayer == 'X') ? 'O' : 'X'; // Switch player
} else {
cout << "Invalid move. Try again.\n";
}
} while (true);
printBoard(board);
if (winner != ' ') {
cout << "Player " << winner << " wins!\n";
} else {
cout << "It's a draw!\n";
}
return 0;
}
void printBoard(const vector<vector<char>> &board) {
cout << " 0 1 2\n";
for (int i = 0; i < 3; ++i) {
cout << i << " ";
for (int j = 0; j < 3; ++j) {
cout << board[i][j] << " ";
}
cout << endl;
}
}
bool isMoveValid(const vector<vector<char>> &board, int row, int col) {
return (row >= 0 && row < 3 && col >= 0 && col < 3 && board[row][col] == ' ');
}
bool isGameOver(const vector<vector<char>> &board, char &winner) {
// Check rows, columns, and diagonals for a winner
for (int i = 0; i < 3; ++i) {
if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][0] != ' ') {
winner = board[i][0];
return true;
}
if (board[0][i] == board[1][i] && board[1][i] == board[2][i] && board[0][i] != ' ') {
winner = board[0][i];
return true;
}
}
if (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[0][0] != ' ') {
winner = board[0][0];
return true;
}
if (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[0][2] != ' ') {
winner = board[0][2];
return true;
}
// Check for a draw
for (int i = 0; i < 3; ++i) {
for (int j = 0; j < 3; ++j) {
if (board[i][j] == ' ') {
return false; // The game is not over yet
}
}
}
// If no winner and no empty spaces, it's a draw
return true;
}
void makeMove(vector<vector<char>> &board, int row, int col, char currentPlayer) {
board[row][col] = currentPlayer;
}
