Using 2D Arrays inside Classes
 

Hello, I am trying to declare a 2D array (3x3) inside of a class.

I have it set up like this:

GameBoard.cpp

#include "GameBoard.h"

#include <iostream>



using namespace std;



char board [3][3];



GameBoard::GameBoard()

{

        board [0][0] = 'a';

        board [0][1] = 'b';

        board [0][2] = 'c';

        board [1][0] = 'd';

        board [1][1] = 'e';

        board [1][2] = 'f';

        board [2][0] = 'g';

        board [2][1] = 'h';

        board [2][2] = 'i';

        

}

Game.cpp (Driver)

#include "GameBoard.h"

#include <iostream>



using namespace std;



int main()

{

        cout << "Let's play Tic-Tac-Toe!!" << endl <<

                        "Player 1 gamepiece is X" << endl <<

                        "Player 2 gamepiece is O" << endl <<

                        endl << "Here's how the board is laid out" << endl << endl << 

                        "a|b|c" << endl << "-----" << endl <<

                        "d|e|f" << endl << "-----" << endl <<

                        "g|h|i" << endl << endl << 

                        "Let's begin..." << endl;



        //cout << GameBoard.board[0][0]; // illegal

        //cout << GameBoard::GameBoard.board[0][0]; //illegal



        return 0;

}

GameBoard.h

#ifndef GAME_H

#define GAME_H



#include <iostream>

using namespace std;



class GameBoard

{

        private:

                char a,b,c,d,e,f,g,h,i;



        public:

                GameBoard(); // default constructor to set gameboard to all blanks. 

                /*playerChoice(char, char); // player's choice (X or O, location on brd)

                int isWin(); // displays a winner message

                printBoard(ostream &); // displays the current board to screen*/



};









#endif

What I am trying to do right now is be able to display my array using the class. I tried some of those but they were illegal declarations.

Re: Using 2D Arrays inside Classes
 

Um, board isn't a member of the GameBoard class. It's a global variable.

Re: Using 2D Arrays inside Classes
 

Okay I figured out the default constructor. Now I need to create a function named "playerChoice" which changes the stored array value into whatever the player's space that is chosen and replaces it with an 'X' or 'O' and then calls a function to print out the current board status.

Re: Using 2D Arrays inside Classes
 

Hey I think your one of your functions is incorrect are you sure its not like this?

ostream&printBoard(ostream&);

Re: Using 2D Arrays inside Classes
 

If you want to sharing your global variables, use 'static' on them..
Example:

static int myArray[2][2];

Re: Using 2D Arrays inside Classes
 

Not really? And what's a problem? Did you exhaust your C++ compiler member functions limit?..