Help with Tic Tac Toe game not displaying Xs and Os

[Hatches]

So I have an assignment where I need to implement a Tic Tac Toe game for board sizes of 3x3, 4x4, and 5x5 games. Upon switching from a 1-9 numbering system to a dashes-to-player value system (as per assignment request) I've been unable to get the game to properly display the X and O's

The code is, unfortunately, quite long, so I've made a pastebin of the entire code here: http://pastebin.com/LVnN9CPu. A snippet of the problem area is below (the rest is mostly win conditions, which do work). Starts at line 389 of the pastebin.

  void Input(char player);
bool hasWon = false;
bool isTie = false;
bool isPlaying = true;
void updateBoard9(char b[3][3], int dimension, char player, char currentMove, char currentMoveColumn);
void updateBoard16(char b[4][4], int dimension, char player, char currentMove);
void updateBoard25(char b[5][5], int dimension, char player, char currentMove);

char player = 'X';
char player2 = 'O';
char activePlayer = player;
char currentMove;
char currentMoveColumn;


int main()
{
	int dimension;
	int three = 3;
	int four = 4;
	int five = 5;
	cout << "Please select a board size by inputting a full-number integer between 3 and 5" << endl;
	cout << "Input 3 for a 3x3 board" << endl;
	cout << "Input 4 for a 4x4 board" << endl;
	cout << "Input 5 for a 5x5 board" << endl;
	cin >> dimension;

	if (dimension == three){
		char b[3][3] = { { '-', '-', '-' }, { '-', '-', '-' }, { '-', '-', '-' } };
		displayBoard9(b, 3);

		while (isPlaying && !hasWon && !isTie)
		{
			Input(activePlayer);
			char tile = b[currentMove][currentMoveColumn];

			if (currentMove < '0' || currentMove >	'2' || currentMoveColumn < '0' || currentMoveColumn > '2'){
				cout << "Invalid Input." << endl;
			}
			else
			{
				if (tile == 'X' || tile == 'O'){

					cout << "Invalid Move" << endl;
				}
				else
				{
					updateBoard9(b, 3, activePlayer, currentMove, currentMoveColumn);
					checkWin3(b);
					//checkTie();
				}

			}

			if (hasWon){
				system("pause");
				cout << "A player has obtained victory." << endl;
			}
			else
				displayBoard9(b, 3);

			if (activePlayer == player) activePlayer = player2;
			else activePlayer = player;
		}
	}	if (dimension == four){
		char b[04][04] = { { '-', '-', '-', '-' }, { '-', '-', '-', '-' }, { '-', '-', '-', '-' }, { '-', '-', '-', '-' } };
		displayBoard16(b, 4);

		while (isPlaying && !hasWon && !isTie)
		{
			Input(activePlayer);
			char tile = b[0][currentMove - '1'];

			if (currentMove < '1' || currentMove >	'16')
				cout << "Invalid Input." << endl;

			else
			{
				if (tile == 'X' || tile == 'O')
				{
					cout << "Invalid Move" << endl;
				}
				else
				{
					updateBoard16(b, 4, activePlayer, currentMove);
					checkWin4(b);
					//checkTie();
				}

			}

			if (hasWon){
				system("pause");
				cout << "A player has obtained victory." << endl;
			}
			else
				displayBoard16(b, 4);

			if (activePlayer == player) activePlayer = player2;
			else activePlayer = player;
		}
	} if (dimension == five){
		char b[05][05] = { { '-', '-', '-', '-', '-' }, { '-', '-', '-', '-', '-' }, { '-', '-', '-', '-', '-' }, { '-', '-', '-', '-', '-' }, { '-', '-', '-', '-', '-' } };
		displayBoard25(b, 5);

		while (isPlaying && !hasWon && !isTie)
		{
			Input(activePlayer);
			char tile = b[0][currentMove - '1'];

			if (currentMove < '1' || currentMove >	'25')
				cout << "Invalid Input." << endl;

			else
			{
				if (tile == 'X' || tile == 'O')
				{
					cout << "Invalid Move" << endl;
				}
				else
				{
					updateBoard25(b, 5, activePlayer, currentMove);
					checkWin5(b);
					//checkTie();
				}

			}

			if (hasWon){
				system("pause");
				cout << "A player has obtained victory." << endl;
			}
			else
				displayBoard25(b, 5);

			if (activePlayer == player) activePlayer = player2;
			else activePlayer = player;
		}
	}
	else {
		cout << "That input is not valid" << endl;
		return 0;
	}
}
//
//End of int-main

void displayBoard9(char b[][3], int dimension)
{
	cout << "Tic-Tac-Toe 3x3" << endl;;

	for (int x = 0; x < dimension; x++)
	{
		for (int y = 0; y < dimension; y++)
		{
			cout << b[x][y];
			cout << " ";
		}
		cout << endl;
	}
	cout << endl;
}

void displayBoard16(char b[][4], int dimension)
{
	cout << "Tic-Tac-Toe 4x4" << endl;;

	for (int x = 0; x < dimension; x++)
	{
		for (int y = 0; y < dimension; y++)
		{
			cout << b[x][y];
			cout << " ";
		}
		cout << endl;
	}
	cout << endl;
}

void displayBoard25(char b[][5], int dimension)
{
	cout << "Tic-Tac-Toe 5x5" << endl;

	for (int x = 0; x < dimension; x++)
	{
		for (int y = 0; y < dimension; y++)
		{
			cout << b[x][y];
			cout << " ";
		}
		cout << endl;
	}
	cout << endl;
}

void updateBoard9(char b[3][3], int dimension, char player, char currentMove, char currentMoveColumn)
{
	if (currentMove > '-1' && currentMove <= '2' && currentMoveColumn > '-1' && currentMoveColumn<= '2')
		b[currentMove][currentMoveColumn] = player;
}

void updateBoard16(char b[4][4], int dimension, char player, char currentMove)
{
	if (currentMove > '0' && currentMove <= '16')
		b[0][currentMove - '1'] = player;
}

void updateBoard25(char b[5][5], int dimension, char player, char currentMove)
{
	if (currentMove > '0' && currentMove <= '25')
		b[0][currentMove - '1'] = player;
}

void Input(char player)
{
	cout << "Enter your move, starting with the row and then column value of the desired space " << player << ": ";
	cin >> currentMove;
	cin >> currentMoveColumn;
}

EDIT:: btw, I'm focusing on the inputs/outputs of the 3x3 board right now, since I'm using that to try to get the game to work before implementing it on the 4x4 and 5x5 variants. The 4x4 and 5x5 updateBoard features are still unedited from when the board was a numeric grid so they won't be quite right/consistent.

[cire]

char tile = b[currentMove][currentMoveColumn];

currentMove and currentColumn are char types containing character representations of digits. The value of '0' is not 0, so these do not consist of valid index values for b.