TIC_TAC_TOE_GAME.cpp

//TIC  TAC  TOE  GAME

#include<iostream>
using namespace std;
char board[3][3]={{'1','2','3'},{'4','5','6'},{'7','8','9'}};
char turn='X';
int row,column;
bool draw=false;

void display_board()
{
	
	system("cls");
	cout<<"\n\n";
	cout<<"              TIC  TAC  TOE  GAME              "<<endl;
	cout<<"\n\n";
	cout<<"\tPlayer1 [X]\n\tPlayer2 [O]\n\n";
	cout<<"\t\t     |     |     \n";
	cout<<"\t\t  "<<board[0][0]<<"  |  "<<board[0][1]<<"  |  "<<board[0][2]<<"   \n";
	cout<<"\t\t_____|_____|_____\n";
	cout<<"\t\t     |     |     \n";
	cout<<"\t\t  "<<board[1][0]<<"  |  "<<board[1][1]<<"  |  "<<board[1][2]<<"   \n";
	cout<<"\t\t_____|_____|_____\n";
	cout<<"\t\t     |     |     \n";
	cout<<"\t\t  "<<board[2][0]<<"  |  "<<board[2][1]<<"  |  "<<board[2][2]<<"   \n";
	cout<<"\t\t     |     |     \n";	
}

void player_turn()
{
	int choice;
	if(turn=='X')
	cout<<"\n\tPlayer1 [X] turn: ";
	if(turn=='O')
	cout<<"\n\tPlayer2 [O] turn: ";
	cin>>choice;
	switch(choice)
	{
		case 1:row=0;column=0;
			   break;
		case 2:row=0;column=1;
		       break;
		case 3:row=0;column=2;
		       break;
		case 4:row=1;column=0;
			   break;
		case 5:row=1;column=1;
		       break;
		case 6:row=1;column=2;
		       break;
		case 7:row=2;column=0;
		       break;
		case 8:row=2;column=1;
		       break;
		case 9:row=2;column=2;
		       break;
		default:cout<<"\t\tInvalid Choice"<<endl;
		        break;
	}	
	if(turn=='X' && board[row][column]!='X' && board[row][column]!='O')
	{
		board[row][column]='X';
			turn='O';
	}
	else if(turn=='O' && board[row][column]!='X' && board[row][column]!='O')
	{
		board[row][column]='O';
		turn='X';
	}
	else
	{
		cout<<"\t\tBox already filled!\n\t\tPlease try again!!!\n\n";
		player_turn();
	}
	display_board();
}

bool gameover()
{
	//check win
	for(int i=0;i<3;i++)
	{
		if(board[i][0]==board[i][1] && board[i][0]==board[i][2] || board[0][i]==board[1][i] && board[0][i]==board[2][i])
		return false;
	}
	if(board[0][0]==board[1][1] && board[0][0]==board[2][2] || board[0][2]==board[1][1] && board[0][0]==board[2][0] )
	return false;

	//check if any box is not filled
	for(int i=0;i<3;i++)
	{
		for(int j=0;j<3;j++)
		{
			if(board[i][j]!='X' && board[i][j]!='O')
			return true;
		}
	}
	
	//game draw
	draw=true;
	return false;
}

int main()
{
	while(gameover())
	{
		display_board();
		player_turn();
		gameover();
	}
	if(turn=='X' && draw==false)
	{
		cout<<"\n\n";
		cout<<"\t\tPlayer2 [O] Wins!!!\n\t\tCongratulations :)\n";
	}
		else if(turn=='O' && draw==false)
		{
			cout<<"\n\n";
			cout<<"\t\tPlayer1 [X] Wins!!!\n\t\tCongratulations :)\n";
		}
		else
		{
			cout<<"\n\n";
			cout<<"\t\tGame  Draw!!!\n";
			return 0;
		}
}