In need of master's help

[suna6382]

Write your question here.
I have no idea why there are errors with this code.

  // Tic Tac Toe, by Sun A Cho

// Include iostream library
#include <iostream>
#include <string>

// Use the standard namespace
using namespace std;
// Declare a global variable
char Board[9];
// Declare a fuction
void showBoard();
bool moveIsValid(int m);
int whoWon(); // Return 0 if no one has won, and 2 if player 2 has won

void main()
{
	// Declare local variable
	string Player_1_Name;
	string Player_2_Name;
	int Whose_Turn = 1; // 1 means it's player 1's turn, 2 means its player 2's turn
	int Move; // Stores where the player wants to move
	int Total_Moves = 0;

	// Assign values to the playing board
	Board[0] = '0';
	Board[1] = '1';
	Board[2] = '2';
	Board[3] = '3';
	Board[4] = '4';
	Board[5] = '5';
	Board[6] = '6';
	Board[7] = '7';
	Board[8] = '8'; 
	
	// Get player names
	cout << "Player 1: Please enter your name" << endl;
	cin >> Player_1_Name;
	cout << "Player 2: Please enter your name" << endl;
	cin >> Player_2_Name;

	while (whoWon() == 0 && Total_Moves < 9)
	{

		// Do this until the player chooses a valid move
		do
		{
			// Show the board
			showBoard();
			// Tell which player to move
			if (Whose_Turn == 1)
			{
				cout << Player_1_Name << ": It's your turn" << endl;
			}
			else
			{
				cout << Player_2_Name << ": It's your turn" << endl;
			}

			// Get the move
			cout << "Enter the number of the spot where you'd like to move" << endl;
			cin >> Move;
		} while (moveIsValid(Move) != true);
		// Add 1 to Total_move
		Total_Moves++;

		// Change whose turn it is
		switch (Whose_Turn)
		{
		case (1) :
		{
			Board[Move] = 'x';
			Whose_Turn = 2;
			break;
		}
		case (2) :
		{
			Board[Move] = 'o';
			Whose_Turn = 1;
		}
		}
	}
	// Show board
	showBoard();

	if (whoWon() == 1)
	{
		cout << Player_1_Name << "has won the game!" << endl;
	}
	else if (whoWon() == 2)
	{
		cout << Player_2_Name << "has won the game!" << endl;
	}
	else
	{
		cout << "It's a tie game" << endl;
	}
	system("PAUSE");

}

void showBoard()
{ // error C2447: '{': missing function header (old-style formal list?)
	cout << endl;
	cout << Board[0] << "|" << Board[1] << "|" << Board[2] << endl;
	cout << "-+-+-" << endl;
	cout << Board[3] << "|" << Board[4] << "|" << Board[5] << endl;
	cout << "-+-+-" << endl;
	cout << Board[6] << "|" << Board[8] << "|" << Board[9] << endl;
	cout << endl;
}


bool moveIsValid(int m)
{ // error C2447: '{': missing function header (old-style formal list?)
	if (Board[m] != 'x' && Board[m] != 'o')
	{
		return true;
	}
	else
	{
		return false;
	}
}

int whoWon()
{
	if (Board[0] == Board[1] && Board[1] == Board[2])
	{
		if (Board[0] == 'x')
		{
			return 1;
		}
		else
		{
			return 2;
		}
	}

	if (Board[3] == Board[4] && Board[4] == Board[5])
	{
		if (Board[3] == 'x')
		{
			return 1;
		}
		else
		{
			return 2;
		}
	}

	if (Board[6] == Board[7] && Board[7] == Board[8])
	{
		if (Board[6] == 'x')
		{
			return 1;
		}
		else
		{
			return 2;
		}
	}

	if (Board[0] == Board[3] && Board[3] == Board[6])
	{
		if (Board[0] == 'x')
		{
			return 1;
		}
		else
		{
			return 2;
		}
	}

	if (Board[1] == Board[4] && Board[4] == Board[7])
	{
		if (Board[1] == 'x')
		{
			return 1;
		}
		else
		{
			return 2;
		}
	}

	if (Board[2] == Board[5] && Board[5] == Board[8])
	{
		if (Board[2] == 'x')
		{
			return 1;
		}
		else
		{
			return 2;
		}
	}

	if (Board[0] == Board[4] && Board[4] == Board[8])
	{
		if (Board[0] == 'x')
		{
			return 1;
		}
		else
		{
			return 2;
		}
	}

	if (Board[2] == Board[4] && Board[4] == Board[6])
	{
		if (Board[2] == 'x')
		{
			return 1;
		}
		else
		{
			return 2;
		}
	}

	return 0;
}

[wildblue]

line 16 - main should return int, not void

line 109 - array elements would be 6,7 and 8, not 6, 8 and 9