Correcting a Tic Tac Toe-Draw function

Question

I am making a multiplayer tic tac toe game with a semi-graphical interface. I have made the code and most of it works.The only part of it that doesn't work is the draw function.

I do understand that I am using TurboC++,which is a highly out of date compiler,but the Indian education system follows only TurboC++,so I have to make my project in it.(The syllabus was changed to have Python instead of C++ recently but I happened to be in the last batch of students that will not be taught Python)

The problem is in the last part of the result() function. I was unable to find what was wrong with it.I have not used graphics.h because it is not in my syllabus.

result function alone:

struct mat  //To store the positions and what is present in the 9 boxes
{
 int x,y;char ch;
};

struct xo  //To keep track of the match
{
 int actp,actx,acty;
 mat pos[3][3];
 char flag;

void setup() //To create the boxes/bars
 {
  actp=1,actx=1,acty=1;
  flag=0;
  for(int i=0;i<3;i++)
  {
   for(int j=0;j<3;j++)
   pos[i][j].ch=0;
  }
 }

void result()  //To find the result
 {
  char flage;
  for(int i=0;i<3;i++) //Column win
  {
   if(pos[i][0].ch==pos[i][1].ch&&pos[i][1].ch==pos[i][2].ch)
   flage=pos[i][0].ch;
  }
  for(i=0;i<3;i++) //Row win
  {
   if(pos[0][i].ch==pos[1][i].ch&&pos[1][i].ch==pos[2][i].ch)
   flage=pos[0][i].ch;
  }

  if(pos[0][0].ch==pos[1][1].ch&&pos[1][1].ch==pos[2][2].ch) //Diagonal win
  flage=pos[0][0].ch;

  if(pos[0][2].ch==pos[1][1].ch&&pos[1][1].ch==pos[2][0].ch) //Other diagonal win
  flage=pos[0][2].ch;

  if(flage=='X')flag='1';
  else if(flage=='O')flag='2';
  else flag='0';

  int chk=1;
  for(i=0;i<3;i++)
  {
   for(int j=0;j<3;j++)
   {if(pos[i][j].ch=='0'){chk=0;gotoxy(3,15);cout<<chk;} }//Added cout statement for debugging
  }
  if(flag=='0'&&chk==0)flag='D';//I understand that the condition is supposed to be chk==1,but it works only if I have this condition
 }
}a;

Here is the whole code,if necessary: https://drive.google.com/open?id=19WMexp3Hw_p9hO3qiYm0HRj-GGAJeaTr

A screenshot: https://i.stack.imgur.com/wGh7a.jpg

If I use the correct condition, the program says that the match is drawn just after 1 move.

With this wrong condition, the program works to a certain extent and is able to find winners but never declares a match drawn even if it happens.

Thanks for the help!!

Answer 1

I have corrected the errors, will elaborate soon. Thanks for the help.