tictactoe.h
#pragma once
#include <iostream>
#include <string>
#include <iomanip>
#include <time.h>
using namespace std;
class tictactoe
{
private:
int move = 0;
string dummy;
char currentMove = 'X';
char player = 'O'; //x or y
char board[9] = { ' ',' ', ' ',' ', ' ', ' ',' ',' ',' ' };
public:
void displayMenu() {
cout << "Tic Tac Toe" << endl;
cout << "-----------\n" << endl;
cout << "Objective: make 3 marks, 'X' or 'O', in a row on a 3 x 3 grid.\n" << endl;
cout << "To place marks on the the grid, enter a number 1-9, 1 being the top left corner, and 9 being the bottom right." << endl;
cout << "Press enter to continue: ";
getline(cin, dummy);
};
void displayBoard(char b[9]) {
cout << endl;
cout << " " << board[0] << " | " << board[1] << " | " << board[2] << " " << endl;
cout << "---+---+---" << endl;
cout << " " << board[3] << " | " << board[4] << " | " << board[5] << " " << endl;
cout << "---+---+---" << endl;
cout << " " << board[6] << " | " << board[7] << " | " << board[8] << " " << endl;
};
char determinePlayerMark() {
char mark;
srand(time(NULL));
int num = rand() % 2;
if (num == 1)
mark = 'X';
else
mark = 'O';
cout << "\nYou are " << mark << "!" << endl;
cout << "------------\n";
return mark;
};
char playerMove(char p, char c) {
player = p;
currentMove = c;
currentMove = player;
cout << "Select a box to make your move [1-9]: ";
cin >> move;
if (board[move - 1] != ' ') {
cout << "This box is occupied!\n";
playerMove(player, currentMove);
}
else {
board[move - 1] = player;
}
checkWin();
return currentMove;
};
char computerMove(int c) {
char computer;
if (player == 'X')
computer = 'O';
else
computer = 'X';
currentMove = c;
currentMove = computer;
// Check for winning moves for the computer
for (int i = 0; i < 9; ++i) {
if (board[i] != 'X' && board[i] != 'O') {
board[i] = computer;
if (checkWin()) {
return currentMove;
}
board[i] = ' ';
}
}
// Check for winning moves for the player and block them
for (int i = 0; i < 9; ++i) {
if (board[i] != 'X' && board[i] != 'O') {
board[i] = player;
if (checkWin()) {
board[i] = computer;
return currentMove;
}
board[i] = ' ';
}
}
// Choose a random move
int move;
move = rand() % 9;
if (board[move - 1] == 'X' || board[move - 1] == 'O') {
computerMove(computer);
}
else {
board[move - 1] = computer;
}
return currentMove;
}
bool checkWin() {
if ((board[0] == board[1] && board[1] == board[2]) && board[0] != ' ') {
return true;
}
if ((board[3] == board[4] && board[4] == board[5]) && board[3] != ' ') {
return true;
}
if ((board[6] == board[7] && board[7] == board[8]) && board[6] != ' ') {
return true;
}
if ((board[0] == board[3] && board[3] == board[6]) && board[0] != ' ') {
return true;
}
if ((board[1] == board[4] && board[4] == board[7]) && board[1] != ' ') {
return true;
}
if ((board[2] == board[5] && board[5] == board[8]) && board[2] != ' ') {
return true;
}
if ((board[0] == board[4] && board[4] == board[8]) && board[0] != ' ') {
return true;
}
if ((board[6] == board[4] && board[4] == board[2]) && board[6] != ' ') {
return true;
}
else
return false;
};
bool checkTie() {
for (int i = 0; i < 9; i++) {
if (board[i] = ' ')
return false;
}
return true;
};
};
tictactoe.cpp
#include <iostream>
#include <string>
#include <iomanip>
#include "tictactoe.h"
using namespace std;
int main() {
tictactoe game;
char board[9];
char currentMove = 'X';
game.displayMenu();
char player = game.determinePlayerMark();
while (!game.checkWin() || !game.checkTie()) {
if (player == 'X') {
game.displayBoard(board);
game.playerMove(player, currentMove);
if (game.checkWin() || game.checkTie())
break;
game.computerMove(currentMove);
}
else if (player == 'O') {
game.computerMove(currentMove);
if (game.checkWin() || game.checkTie())
break;
game.displayBoard(board);
game.playerMove(player, currentMove);
}
}
game.displayBoard(board);
if (game.checkWin()) {
cout << currentMove << " wins!" << endl;
}
else if (game.checkTie()) {
cout << "It is a tie!" << endl;
}
cout << "Thank you for playing Tic Tac Toe!";
return 0;
}
Whenever I enter "1" in the console, the program is supposed to print an X or O in the top left square in the tic tac toe grid, but it does not change and skips to the next line of code.
It is also supposed to check if a player or the computer has won, but it does not register that the computer has won even though the checkWin() function is for both X and O.
Here is the code for the project:
I have tried changing the function type from char to void and getting rid of some extra parameters like the "currentMove" parameter that is used for determining which symbol (X or O) won, but nothing changed.
I dont understand why only the top left corner does not print, since every other square is fine.
