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Introducing the Tic-Tac-Toe Board

Program

The Tic-Tac-Toe Board program displays a tic-tac-toe board. The program displays the board and declares X the winner. Although the program could have been written using a one-dimensional array, it uses a two-dimensional array to represent the board. Figure 3.5 illustrates the program.

You can download the code for this program from the Course Technology website (www.courseptr.com/downloads). The program is in the Chapter 3 folder; the filename is tic-tac-toe_board.cpp.



image

Figure 3.5

The tic-tac-toe board is represented by a two-dimensional array.

104 Chapter 3 n For Loops, Strings, and Arrays: Word Jumble


// Tic-Tac-Toe Board

// Demonstrates multidimensional arrays #include <iostream>

using namespace std;


int main()

{

const int ROWS = 3; const int COLUMNS = 3;

char board[ROWS][COLUMNS] = { {’O’, ’X’, ’O’},

{’ ’, ’X’, ’X’},

{’X’, ’O’, ’O’} };


cout << "Here’s the tic-tac-toe board:\n"; for (int i = 0; i < ROWS; ++i)

{

for (int j = 0; j < COLUMNS; ++j)

{

cout << board[i][j];

}


cout << endl;

}


cout << "\n’X’ moves to the empty location.\n\n"; board[1][0] = ’X’;


cout << "Now the tic-tac-toe board is:\n"; for (int i = 0; i < ROWS; ++i)

{

for (int j = 0; j < COLUMNS; ++j)

{

cout << board[i][j];

}


cout << endl;

}

Using Multidimensional Arrays 105



cout << "\n’X’ wins!";


return 0;

}