I made a tic tac toe program, I used one function to check for the win or draw scenario, the code works fine, but I am not allowed to use functions in this task.
This is my code now, works fine now when the function gameover() is added:
#include <iostream>
using namespace std;
bool gameover();
char turn = 'X';
bool draw = false;
char board[3][3] = { { '1', '2', '3' }, { '4', '5', '6' }, { '7', '8', '9' } };
int main()
{
while (!gameover())
{
cout << "\nPlayer 1 [X] --- Player 2 [O]\n\n\n";
cout << "\t" << board[0][0] << " " << board[0][1] << " " << board[0][2] << endl<< endl;
cout << "\t" << board[1][0] << " " << board[1][1] << " " << board[1][2] << endl<< endl;
cout << "\t" << board[2][0] << " " << board[2][1] << " " << board[2][2] << endl<< endl;
int choice;
int row = 0, column = 0;
if (turn == 'X')
cout << "Player 1 turn [X]: ";
else if (turn == 'O')
cout << "Player 2 turn [O]: ";
cin >> choice;
switch (choice)
{
case 1: row = 0; column = 0; break;
case 2: row = 0; column = 1; break;
case 3: row = 0; column = 2; break;
case 4: row = 1; column = 0; break;
case 5: row = 1; column = 1; break;
case 6: row = 1; column = 2; break;
case 7: row = 2; column = 0; break;
case 8: row = 2; column = 1; break;
case 9: row = 2; column = 2; break;
default:
cout << "\nYou didn't enter a correct number! Try again\n";
continue;
}
if (turn == 'X' && board[row][column] != 'X' && board[row][column] != 'O')
{
board[row][column] = 'X';
turn = 'O';
}
else if (turn == 'O' && board[row][column] != 'X' && board[row][column] != 'O')
{
board[row][column] = 'O';
turn = 'X';
}
else
{
cout << "\nThe cell you chose is used! Try again\n";
continue;
}
gameover();
}
if (turn == 'O' && !draw)
cout << endl << endl << "Player 1 [X] Wins! Game Over!\n";
else if (turn == 'X' && !draw)
cout << endl << endl << "Player 2 [O] Wins! Game Over!\n";
else
cout << endl << endl << "It's a draw! Game Over!";
}
bool gameover()
{
for (int i = 0; i < 3; i++)//Check for a win
if ((board[i][0] == board[i][1] && board[i][1] == board[i][2]) || (board[0][i] == board[1][i] && board[1][i] == board[2][i]) || (board[0][0] == board[1][1] && board[1][1] == board[2][2]) || (board[0][2] == board[1][1] && board[1][1] == board[2][0]))
return true;
for (int i = 0; i < 3; i++)//Check for draw
for (int j = 0; j < 3; j++)
if (board[i][j] != 'X' && board[i][j] != 'O')
return false;
draw = true;
return true;
}
But when I remove the gameover() function and add it in the int main(), it doesn't check for win or draw, it keeps on showing the display board, the program doesn't end.
How do I add the gameover function in the int main and make it check for win or draw?
EDIT: This is the code I implemented so far, even if there are 3 straight 'X', it still asks for output:
#include <iostream>
using namespace std;
bool gameover();
char turn = 'X';
bool draw = false;
char board[3][3] = { { '1', '2', '3' }, { '4', '5', '6' }, { '7', '8', '9' } };
int main()
{
while (draw != true)
{
cout << "\nPlayer 1 [X] --- Player 2 [O]\n\n\n";
cout << "\t" << board[0][0] << " " << board[0][1] << " " << board[0][2] << endl<< endl;
cout << "\t" << board[1][0] << " " << board[1][1] << " " << board[1][2] << endl<< endl;
cout << "\t" << board[2][0] << " " << board[2][1] << " " << board[2][2] << endl<< endl;
int choice;
int row = 0, column = 0;
if (turn == 'X')
cout << "Player 1 turn [X]: ";
else if (turn == 'O')
cout << "Player 2 turn [O]: ";
cin >> choice;
switch (choice)
{
case 1: row = 0; column = 0; break;
case 2: row = 0; column = 1; break;
case 3: row = 0; column = 2; break;
case 4: row = 1; column = 0; break;
case 5: row = 1; column = 1; break;
case 6: row = 1; column = 2; break;
case 7: row = 2; column = 0; break;
case 8: row = 2; column = 1; break;
case 9: row = 2; column = 2; break;
default:
cout << "\nYou didn't enter a correct number! Try again\n";
continue;
}
if (turn == 'X' && board[row][column] != 'X' && board[row][column] != 'O')
{
board[row][column] = 'X';
turn = 'O';
}
else if (turn == 'O' && board[row][column] != 'X' && board[row][column] != 'O')
{
board[row][column] = 'O';
turn = 'X';
}
else
{
cout << "\nThe cell you chose is used! Try again\n";
continue;
}
for (int i = 0; i < 3; i++)//Check for a win
if ((board[i][0] == board[i][1] && board[i][1] == board[i][2]) || (board[0][i] == board[1][i] && board[1][i] == board[2][i]) || (board[0][0] == board[1][1] && board[1][1] == board[2][2]) || (board[0][2] == board[1][1] && board[1][1] == board[2][0]))
draw = true;
for (int i = 0; i < 3; i++)//Check for draw
for (int j = 0; j < 3; j++)
if (board[i][j] != 'X' && board[i][j] != 'O')
draw = false;
}
cout << "The Final Result\n\n\n";
cout << "\t" << board[0][0] << " " << board[0][1] << " " << board[0][2] << endl<< endl;
cout << "\t" << board[1][0] << " " << board[1][1] << " " << board[1][2] << endl<< endl;
cout << "\t" << board[2][0] << " " << board[2][1] << " " << board[2][2] << endl<< endl;
if (turn == 'O' && !draw)
cout << endl << endl << "Player 1 [X] Wins! Game Over!\n";
else if (turn == 'X' && !draw)
cout << endl << endl << "Player 2 [O] Wins! Game Over!\n";
else
cout << endl << endl << "It's a draw! Game Over!";
}
bool gameover()
{
for (int i = 0; i < 3; i++)//Check for a win
if ((board[i][0] == board[i][1] && board[i][1] == board[i][2]) || (board[0][i] == board[1][i] && board[1][i] == board[2][i]) || (board[0][0] == board[1][1] && board[1][1] == board[2][2]) || (board[0][2] == board[1][1] && board[1][1] == board[2][0]))
return true;
for (int i = 0; i < 3; i++)//Check for draw
for (int j = 0; j < 3; j++)
if (board[i][j] != 'X' && board[i][j] != 'O')
return false;
draw = true;
return true;
}
#include <iostream>
using namespace std;
char turn = 'X';
bool draw = false;
bool gameover = false;
char board[3][3] = { { '1', '2', '3' }, { '4', '5', '6' }, { '7', '8', '9' } };
int main()
{
while (!gameover)
{
cout << "\nPlayer 1 [X] --- Player 2 [O]\n\n\n";
cout << "\t" << board[0][0] << " " << board[0][1] << " " << board[0][2] << endl<< endl;
cout << "\t" << board[1][0] << " " << board[1][1] << " " << board[1][2] << endl<< endl;
cout << "\t" << board[2][0] << " " << board[2][1] << " " << board[2][2] << endl<< endl;
int choice;
int row = 0, column = 0;
if (turn == 'X')
cout << "Player 1 turn [X]: ";
else if (turn == 'O')
cout << "Player 2 turn [O]: ";
cin >> choice;
switch (choice)
{
case 1: row = 0; column = 0; break;
case 2: row = 0; column = 1; break;
case 3: row = 0; column = 2; break;
case 4: row = 1; column = 0; break;
case 5: row = 1; column = 1; break;
case 6: row = 1; column = 2; break;
case 7: row = 2; column = 0; break;
case 8: row = 2; column = 1; break;
case 9: row = 2; column = 2; break;
default:
cout << "\nYou didn't enter a correct number! Try again\n";
continue;
}
if (turn == 'X' && board[row][column] != 'X' && board[row][column] != 'O')
{
board[row][column] = 'X';
turn = 'O';
}
else if (turn == 'O' && board[row][column] != 'X' && board[row][column] != 'O')
{
board[row][column] = 'O';
turn = 'X';
}
else
{
cout << "\nThe cell you chose is used! Try again\n";
continue;
}
draw = true; //assume a draw
for (int i = 0; i < 3; i++)//Check for a win
if ((board[i][0] == board[i][1] && board[i][1] == board[i][2]) || (board[0][i] == board[1][i] && board[1][i] == board[2][i]) || (board[0][0] == board[1][1] && board[1][1] == board[2][2]) || (board[0][2] == board[1][1] && board[1][1] == board[2][0]))
{
gameover = true;
draw = false;
break;
}
if (!gameover)
for (int i = 0; i < 3; i++)//Check for draw
for (int j = 0; j < 3; j++)
if (board[i][j] != 'X' && board[i][j] != 'O')
{
draw = false;
break;
}
if (draw)
gameover = true;
}
if (turn == 'O' && !draw)
cout << endl << endl << "Player 1 [X] Wins! Game Over!\n";
else if (turn == 'X' && !draw)
cout << endl << endl << "Player 2 [O] Wins! Game Over!\n";
else
cout << endl << endl << "It's a draw! Game Over!";
}
Not too pretty, but creating structure and readability is what functions are for.