const up = 0x48;
const down = 0x50;
const right = 0x4d;
const left = 0x4b;
const esc = 0x1b;
const space = 0x20;

void checkomok(int, int, char);
void checkcount(int check[], int , char);

char board[19][19];

int main()
{
 int i,j;
 clrscr();

for(i=0; i<19; i++)
{
        for(j=0; j<19; j++)
        {
                board[i][j] = '+';
                printf("%c ", board[i][j]);
         }
         printf("\n");
 }

 int key;
 int user = 1;
 int x = 1; int y = 1;
 gotoxy(x,y);

 do{
 key = getch();
 if (key == NULL)
 {
        key = getch();
        if (key == up)
        {      if(y > 1)
                        gotoxy(x,--y);
        }
        else if (key == down)
        {       if (y <= 18)
                        gotoxy(x,++y);
        }
        else if (key == right)
        {       if (x <= 36 )
                        gotoxy(++++x, y);
        }
        else if (key == left)
        {       if (x > 1)
                        gotoxy(----x, y);
        }
       else
                printf ("error");
  }

 if (key == space)
  {     if (user == 1 && board[x/2][y-1] == '+')
         {
                printf("@");
                board[x/2][y-1] = '@';
                checkomok(x/2, y-1,'@');
                user = 2;
         }
        else if (user == 2 && board[x/2][y-1] == '+')
        {
                printf("*");
                board[x/2][y-1] = '*';
                checkomok(x/2,y-1, '*');
                user = 1;
        }
  }
}while(key != esc);

return 0;
}

void checkomok(int row, int col, char mark)
{
 int count;
 int check[4] = {0, };
        if (board[row-1][col] == mark || board[row+1][col] == mark)
        {
                count = 1;
                if (board[row-1][col] == mark)
               {
                        while(board[row-1][col] == mark)
                        {
                            row--;   count++;
                        }
                }
                if (board[row+1][col] == mark)
                {
                         row = row + count-1;
                        while(board[row+1][col] == mark)
                        {
                             row++;  count++;
                        }
                }
                check[0] = count;

        }

       if (board[row][col-1] == mark || board[row][col+1] == mark)
       {
                count = 1;
                if (board[row][col-1] == mark)
               {
                        while(board[row][col-1] == mark)
                        {
                            col--;   count++;
                        }
                }
                if (board[row][col+1] == mark)
                {
                        col = col + count-1;
                        while(board[row][col+1] == mark)
                        {
                             col++;  count++;
                        }
                  }
                check[1] = count;
        }

        if (board[row+1][col-1] == mark || board[row-1][col+1] == mark)
       {
                count = 1;
                if (board[row+1][col-1] == mark)
               {
                        while(board[row+1][col-1] == mark)
                        {
                            row++; col--;  count++;
                        }
                }

                if (board[row-1][col+1] == mark)
                {
                        col = col + count-1;
                        row = row - count+1;
                        while(board[row-1][col+1] == mark)
                        {
                            row--; col++;  count++;
                        }
                  }
                check[2] = count;
        }

        if (board[row+1][col+1] == mark || board[row-1][col-1] == mark)
       {
                count = 1;
                if (board[row+1][col+1] == mark)
               {
                        while(board[row+1][col+1] == mark)
                        {
                           row++; col++; count++;
                        }
                }
                if (board[row-1][col-1] == mark)
                {       row = row - count+1;
                        col = col - count+1;
                        while(board[row-1][col-1] == mark)
                        {
                             row--; col--;  count++;
                        }
                  }
                check[3] = count;
        }

        checkcount(check, 4, mark);


  }

  void checkcount(int check[], int size, char mark)
  {
     for(int i=0; i<size; i++)
     {
        if ( check[i] == 5)
         {
              gotoxy(1,22);
              printf("%c ", mark);
              printf("is win!!\n");
              getch();
              exit(1);
         }
     }
  }
----
["Omok"]