Please help with tic tac toe

[cgwood]

Please help me. I have been working on this for days and I am simply lost now. I have searched all over the net trying to find the answers myself and it has only messed me up more. I am new to c++ and writing this tic tac toe program. First, I can not figure out how to make my checkTie function work. I have tried it as a bool and char and i can't get either of them to work properly. I am trying to have it search for the "*" and if one is not found and there has not been a winner yet then the result should be a tie. Second, the function to check for a winner works but ones a winner is declared it is not exiting the loop. Also, once it does declare a winner (or tie) and exit the loop, is there a way to make it start over?
I appreciate any help. Thanks. Here is what I have, sorry if it is a mess.

  #include <iostream>
#include <stdlib.h>
#include <cmath>
#include <math.h>
#include <cstdlib>
#include <string>

using namespace std;



char checkWinner(char[][4]);
char checkTie(char[][4]);

const char PLAYER1='X';
const char PLAYER2='O';


int main()
{
    
    //Game over variable
    bool bGameOver=false;
    
    //Variable to hold winner status
    char winner;
    winner='N';
    
    //variable for play again
    string again;
    
    //variable for checkTie status
    char tie;
    
    
    //Constants for board size
    const int ROWS=4;
    const int COLS=4;
    
    char board[ROWS][COLS] = {{' ', '1', '2', '3'},
                             { '1', '*', '*', '*'},
                             {'2', '*', '*', '*'},
                             {'3', '*', '*', '*'}};
    
    
    //counter variable
    int i;
    //display the board               
    for (int i = 0; i <ROWS; i++)
          {
              cout << board[i][0] << "\t" << board[i][1] << "\t" <<
              board[i][2] << "\t" << board[i][3]<< endl;
          }//end for                  
    
    
    //Variables to hold selection
     int rowx, colx;
     
do//Main game loop
{
     //Get player 1 selection
     cout << "Player X - enter row:"; cin >> rowx;
     cout << "Player X - enter column:"; cin >> colx;
     cout << "" << endl;
     
     if (board[rowx][colx] != '*')
     {
    cout << "This space is taken...try again" << endl;
    cout << "row:" << endl;
    cin >> rowx;
    cout << "column:";
    cin >> colx; 
    }//end if
     
     board[rowx][colx]=PLAYER1;
     
     //counter variable
                             
    for (int i = 0; i <ROWS; i++)
          {
              cout << board[i][0] << "\t" << board[i][1] << "\t" <<
              board[i][2] << "\t" << board[i][3]<< endl;
              
          }//end for 
          
          //call checkwinner function
          winner=checkWinner(board);
          
                     
          if (winner=='X')
          cout << "Player 1 wins!" << endl;
                 
          

    //Get player 2 selection
     cout << "Player O - enter row:"; cin >> rowx;
     cout << "Player O - enter column:"; cin >> colx;
     cout << "" << endl;
     
     if (board[rowx][colx] != '*')
      {
    cout << "This space is taken...try again" << endl;
    cout << "row:" << endl;
    cin >> rowx;
    cout << "column:";
    cin >> colx; 
    }//end if
     
     board[rowx][colx]=PLAYER2;
     
     //counter variable
                             
    for (int i = 0; i <ROWS; i++)
          {
              cout << board[i][0] << "\t" << board[i][1] << "\t" <<
              board[i][2] << "\t" << board[i][3]<< endl;
              
          }//end for       
          
          //call checkwinner function
          winner=checkWinner(board);
          //call checkTie function
          tie=checkTie(board);
          
          if (winner=='O')
          cout << "Player 2 wins!" << endl;
          
          if(tie=='C')
          {
            cout << "It's a tie!" << endl;
            winner='C';
          }//end if 
          
}while(winner != 'X' || winner != 'O' || winner != 'C');     
    
         if (winner=='X'|| winner=='O'|| winner=='C')
         {
            cout << "Game over!" << endl;
            cin >> again;
         }//end if
           
    
                
    
    system ("PAUSE");
    return 0;
    
} //end main



//Declare function checkWinner
char checkWinner(char arr[][4])
{
     //variable to hold result
     char result='B';
     
     //variable to hold counter
     int i=1;

    //Check player 1 status
    for(i=1; i<4; i++)  /* check rows */
    {
        if(arr[i][1]=='X' && arr[i][2]== 'X' && arr[i][3]=='X')
        {
            result='X';
        }
    }

    for(i=1; i<4; i++)  /* check columns */
    {
        if(arr[1][i]=='X' && arr[2][i]== 'X' && arr[3][i]=='X')
        {
            result='X';
        }
    }
       /* test diagonals */
    if(arr[1][1]=='X' && arr[2][2]== 'X' && arr[3][3]=='X')
    {
        result='X';
    }

    if(arr[1][3]=='X' && arr[2][2]=='X' && arr[3][1]=='X')
    {
       result='X';
    }   
    
    //Check player 2 status
    for(i=1; i<4; i++)  /* check rows */
    {
        if(arr[i][1]=='O' && arr[i][2]== 'O' && arr[i][3]=='O')
        {
            result='O';
        }
    }

    for(i=1; i<4; i++)  /* check columns */
    {
        if(arr[1][i]=='O' && arr[2][i]=='O' && arr[3][i]=='O')
        {
            result='O';
        }
    }
       /* test diagonals */
    if(arr[1][1]=='O' && arr[2][2]== 'O' && arr[3][3]=='O')
    {
        result='O';
    }

    if(arr[1][3]=='O' && arr[2][2]=='O' && arr[3][1]=='O')
    {
       result='O';
    }   
    
     
           
       return result;
    
}//end function    

//Define checkTie function
char checkTie(char arr[][4])
{
     //constant for size
     const int SIZE=4;
     

     //variable to hold result
     char result;
     result;
     
     //variable loop counter
     int i=0;
     
          
    for(i=0;i<=SIZE;i++)
    {
        if (arr[i][1]=='*' || arr[i][2]=='*' || arr[i][3]=='*'||
            arr[1][i]=='*'|| arr[2][i]=='*'|| arr[3][i]=='*')
        {   
            result='B';
        }    
        else
        { 
            result='C';
        }   
    }//end if
    
    return result;
}//end function    
    
    

[meesa]

To put it simply, this program is a mess, and by that I mean that you can write it in a much easier way.

MAIN

Create a 3x3 array to hold data.
Create a char plr to hold current player and = 'X'.
Create an int move to hold how many turns have been taken and = 0
DO
-Increment move (First run = 1, second = 2...)
-DO
--Ask player plr to input their row.
--WHILE the input is < 1 || > 3 ask again
--Same step for column
-WHILE array[row][column] is taken
-Check to see if player plr won. If so, break out of loops.
-IF plr == 'X' change to 'O'
-ELSE change to 'X'
WHILE move < 9

Then, to check if a player won, just pass the board and the current player to a function which then checks every possibility of winning in TTT. Return true or false accordingly.