Thread: How to code in c++ programming for tic tac toe(player vs computer)AI using arrays

Eh, anyone can help me how to code for the c++ programming AI tic tac toe . I completely stuck like .........

Code:

#include <iostream>

using namespace std;

int main()
{
   
   char square[3][3] = {{' ',' ',' '},{' ',' ',' '},{' ',' ',' '}};
   
   bool validrow, validcol, validmove;
   int row, col;
   char winner = ' ';
   char turn = 'X';

		cout << "Welcome to tic tac toe game" << endl;
   
	  while (winner == ' ')
	  {
		
		cout << "    1   2   3" << endl;
		cout << " ---------------" << endl;
		for(int i = 1; i < 4; i++)
		{
			cout << " " << i << " | " << square[i-1][0] << " | " << square[i-1][1] << " | " << square[i-1][2] << " |" << endl << " ---------------" << endl;
		}
			 validrow = false;
			 validmove = false;
			 validcol = false;
			while(!validmove)
			{
				validrow = false;
				//Loop until the player selects a valid row
				while(!validrow)
				{
					cout << "Row: ";
					cin >> row;
					if (row == 1 || row == 2 || row == 3)
					{
						validrow = true;
					}
					else
					{
						cout << endl << "Invalid row!" << endl;
					}
				}
           
         //Loop until the player selects a valid column
				while(!validcol)
				{
					cout << "Column: ";
					cin >> col;
					if(col == 1 || col == 2 || col == 3)
					{
						 validcol = true;
					}
					else
					{
						cout << endl << "Invalid column!" << endl;
					}
				}
				validmove = true;
			
                bool validturn;
				validturn = false;

			while (!validturn)
			{
			if (square[row-1][col-1] == ' ')
			{
				square[row-1][col-1] = turn;
				if (turn == 'X')
				{
					turn = 'O';
				}
				else
				{
					turn = 'X';
				}
			
			
			
			
            
			

			if (row == 1  || row == 3 || col == 1 || col == 3 )
			{
				
				square[1][1] = turn;
				cout << "Your next move" << endl;
				if (row == 1  || col == 1)
				{
					square[2][2] = turn;
					cout << "Your next move" << endl;
					validturn = true;
				}
				validturn = true;
				
			}
			else if (row == 2 || col == 2)
			{
				square[2][1] = turn;
				cout << "Your next move" << endl;
				validturn = true;
				
			} 
			
            else
		    {
                cout << "The selected square is occupied!" << endl;
			    cout << "Select again:" << endl;
			}
			}
			}
			}
			  	

			
			
	  }

			
   
   system ("pause");
   return 0;
}

This is my code. I completely stuck

any1 give reply on how to start on the tic tac game with first? Any steps before i trying coding. need help badly. Thank you.

I am not sure what you are asking, but as I see it, there is no AI implemented at all yet?

• Have you tried meta-planning?

• How does the computer win the game? 3 in-a-row, of course, so check if it can do that first ,and make the computer do it.

• What is the first step to getting to 3 in-a-row? 2 in-a-row. check to see if the computer can get two in a row, with the possibility to make it three in the next turn (No sense in going for two in a row, where the third one is already occupied by the enemy!).

• I'd also say, if the center wasn't occupied, go for that one first.

A little backwards, but I'm sure you can make sense of it

As my tutor said, there are no big problems in programming... only a lot of smaller ones! Break the big problems into small chunks and it will be soo much easier.

PS. I'm sorry I can't give you any examples, I'm new at this too

How to start of with? Any method on how should I start first.
Player against computer:
The current state of the board should be displayed at all times. The program should be able to detect a winning combination and stop the game at
that point. (This is my school question)

I just need a simple tic tac toe AI using only like arrays, control selection(if/else) and loops and not graphics