Thread: Constructor problem

Hi Guys,

With my TicTac Toe game i'm creating I think i'm nearly there, but have a problem with my constructor.

When I try and run my program I get the message:

return type specification for constructor invalid

in this line:

Code:

 int TicTacToe(); //in public

And also another message saying

in function int main () // in CPP file

expected primary-expression before "int"

in these lines:

Code:

game.validMove(int r, int c);

Code:

game.xoMove(int symbol);

Here's my full code, can anyone please advise?:

Thanks

TicTacToe.h

Code:

// TICTACTOE.H
// A Program to run the Tic-Tac-Toe Program
#include <iostream>
using namespace std;
#include <iomanip>
using namespace std;
class TicTacToe
{
   private:
     enum Status {WIN, DRAW, CONTINUE };
     char board [3] [3];
   public:
     int TicTacToe();
     void makeMove ();
     void printBoard ();
     bool validMove (int r, int c);
     bool xoMove (int input);
     Status gameStatus ();
     void holdscreen ();
};
 
TicTacToe:: TicTacToe ()
{        
  int numOfRows;
  int numOfCols;
  // Initialising TicTacToe //    
  for (int r = 0; r < numOfRows; r++) //looping rows
    for (int c = 0; c < numOfCols; c++) //looping columns
      board[r][c] = ' ';
}

bool TicTacToe::validMove (int r, int c)
{

// Validate Move Start for X //
cout << "Enter coordinates for X: ";
    cin >> r;
    while(true) {
    if ((r>=3) || (r<0))
    cout<<endl<<"invalid move. try again with a number from 0 to 2: ";
else break;}
// ** End Validate Move Start for X ** //
 
// Validate Move Start for O //
cout << "Enter coordinates for O: ";
    cin >> c;
    while(true) {
    if ((c>=3) || (c<0))
    cout<<endl<<"invalid move. try again with a number from 0 to 2: ";
else break;}
// ** End Validate Move Start for O ** //

}

TicTacToe:: Status TicTacToe:: gameStatus(void)
{
  int a;
  int r;
  int c;
  
  // Check for win in diagonals //
  if (board [0][0]!= '_' && board [0][0] == board [1][1] 
  && board [0][0] == board [2][2])
  return WIN;
  else if (board [0][2]!= '_' && board [0][2] == board [1][1] 
  && board [0][2] == board [2][0])
  return WIN;
  //** End Check for win in diagonals ** //

  // Check for win in rows
  if (board [0][0]!= '_' && board [0][0] == board [1][0] 
  && board [0][0] == board [2][0])
  return WIN;
    else if (board [0][1]!= '_' && board [0][1] == board [1][1] 
  && board [0][1] == board [2][2])
  return WIN; 
    else if (board [0][2]!= '_' && board [0][2] == board [1][2] 
  && board [0][2] == board [2][2])
  return WIN; 
  //** End Check for win in rows  **//  
  
  // Check for win in columns
  if (board [0][0]!= '_' && board [0][0] == board [0][1] 
  && board [0][0] == board [0][2])
  return WIN;
    else if (board [1][0]!= '_' && board [1][0] == board [1][1] 
  && board [1][0] == board [1][2])
  return WIN;
   else if (board [2][0]!= '_' && board [2][0] == board [2][1] 
  && board [2][0] == board [2][2])
  return WIN; 
  // ** End Check for win in columns ** //
}  
void TicTacToe::printBoard (void)
{
     cout << "   0   1   2\n\n";
     
     for ( int r=0; r < 3; ++r ) {
         cout << r;
         
         for ( int c=0; c < 3; ++c ) {
             cout << setw (3) << static_cast < char > ( board [r] [c] );
             
             if (c !=2 )
                cout << " |";
         }
         
         if (r != 2)
            cout << "\n ______|______|______"
                 << "\n ______|______|______\n";
         }
     
     cout <<"\n\n";
}    
void  TicTacToe::makeMove(void)
{
   printBoard();
   
   while ( true ) {
      if (xoMove ( 'X' ) )
         break;
   else if (xoMove ( 'O' ) )
         break;
   }
}

bool TicTacToe::xoMove (int symbol)
{
   int x,y;
   
   do {
       cout << "Player" << static_cast < char > (symbol) << " enter move: ";
       cin >> x >> y;
       cout << '\n';
   } while ( !validMove ( x, y ) );
   
   board [x] [y] = symbol;
   printBoard();
   Status xoStatus = gameStatus();
   
   if ( xoStatus == WIN ) {
      cout << "Player " << static_cast < char > (symbol ) << " wins!\n";
      return true;
   }
   else if (xoStatus == DRAW ) {
        cout << "Game is a draw. \n";
        return true;
   }
   else //Continue
        return false;
}

CPP File

Code:

//tictactoe.cpp
// To get tictactoe program running
# include "tictactoe.h"
int main ()
{
  TicTacToe game;
  game.validMove(int r, int c);
  game.gameStatus();
  game.printBoard();
  game.makeMove();
  game.xoMove(int symbol);
}