Really frustrating debug Error with C++ - c++

Question

So I am trying to make a pretty basic TicTacToe in C++, and while I have no apparent syntax errors, I am having a lot of Debug errors of : "Unhandled exception at 0x0100142D in Cobra.exe: 0xC0000005: Access violation reading location 0xCCCCC359"
I feel like it is an obvious Error that I am just not processing but it;s definitely starting to grate my nerves. I'll label where the access error is... Right now it;s in my checkwin method but I feel like there is definitely more than one..
In my header I use a private char** board and a private int player.
#include "TicTacToe.h"
#include <iostream>
using namespace std;
int main()
{
int rowChosen,
colChosen;
TicTacToe newGame;
while(newGame.checkWin()==' ' && !newGame.fullBoard())
{
newGame.displayBoard();
do
{
cout << "Player " << newGame.getPlayer() << " choose a row and column.";
cin >> rowChosen >> colChosen;
newGame.setGame(rowChosen,colChosen);
}while(newGame.setGame(rowChosen,colChosen)==false);
newGame.makeMove(rowChosen, colChosen, newGame.getPlayer());
newGame.switchPlayer();
}
newGame.displayBoard();
if(newGame.checkWin()!=' ')
cout << "Player " << newGame.returnWinner() << " wins!";
else if(newGame.fullBoard()==true)
cout << "Cat's Game: This is a Draw!";
return 0;
}
TicTacToe::TicTacToe()
{
player = 1;
char blank = ' ';
for(int row=0;row<3;row++)
for(int col=0;col<3;col++)
board[row][col] = ' ';
}
void TicTacToe::setPlayer(int play)
{
player = play;
}
int TicTacToe::getPlayer()
{
return player;
}
void TicTacToe::switchPlayer()
{
if (player==1)
player++;
else
player--;
}
bool TicTacToe::setGame(int row, int col) //input validation
{
if (row >= 3 || row < 0)
return false;
if (col >= 3 || col < 0)
return false;
if (board[row][col] != ' ')
return false;
return true;
}
char TicTacToe::getBoard(int row, int col)
{
return board[row][col];
}
bool TicTacToe::fullBoard()
{
bool full = true;
for(int row=0;row<3;row++)
for(int col=0;col<3;col++)
{
if(board[row][col]==' ')
{
full=false;
break;
}
}
return full;
}
void TicTacToe::makeMove(int r, int c, int player)
{
char ch;
if (player==1)
ch = 'X';
else
ch = 'O';
board[r][c] = ch;
}
char TicTacToe::checkWin()
{
char b = ' ';
for(int i=0; i<3; i++) //horizontal
{
if((board[i][1]==board[i][0]) && (board[i][1]==board[i][2])) //THIS IS ERROR
{
b=board[i][1];
}
}
for(int j=0; j<3; j++) //vertical
{
if( (board[1][j]==board[0][j]) && (board[1][j]==board[2][j]) )
b=board[1][j];
}
if((board[0][0]==board[1][1] && board[1][1]==board[2][2]) ||
(board[2][0]==board[1][1] && board[1][1]==board[0][2]))
b= board[1][1];
return b;
}
void TicTacToe::displayBoard()
{
for(int row=0;row<3;row++)
{
cout << "|-----|";
for(int col=0;col<3;col++)
{
if(board[row][col]==' ')
cout << "| ";
else
cout << "|" << board [row][col];
}
cout << "|" << endl;
cout << "|-----|";
}
}
int TicTacToe::returnWinner()
{
int winner = 0;
if(checkWin()=='X')
winner = 1;
else if(checkWin()=='O')
winner = 2;
return winner;
}
This is my header TicTacToe.h
class TicTacToe
{
private:
char board[3][3]; //there we go
int player;
public:
TicTacToe();
void setPlayer(int);
int getPlayer();
void switchPlayer();
bool setGame(int,int);
char getBoard(int,int);
bool fullBoard();
void makeMove(int,int,int);
char checkWin();
void displayBoard();
int returnWinner();
};

Answer 1

Assuming you've included all the code, you're missing something essential: the declaration of the class TicTacToe. Of course, there's a TicTacToe.h, so it could be (probably is) hiding in there. That would help.
That all said, I think Mat has it right -- you declare a local named board inside the ctor and initialize it. But that goes out of scope as soon as the ctor is finished, which means all that initialization disappears into the aether.. Assuming you define board in your class, then simply removing that char declaration might be all you need.
Now, here's general advice: if you get an access violation exception, it usually means that you have made a mistake about the scope of something you're referring to. Since the exception happens at a point where you're using board, the slice of the program containing the identified board is the place to look.