Lab5_WinFiles.cpp

//
// Created by Oliver Carrera on 11/05/25
// Lab 5 - Write Files
//

#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <cstdlib>
#include <ctime>
using namespace std;

char n[9]{ '1', '2', '3', '4', '5', '6', '7', '8', '9' };
int choice = 0;
bool ttt = true;
bool pwin = false;
bool playing = true;

void display(void);
void check();
void choose();
void win();
void computerMove();

int main()
{
	cout << "Oliver Carrera 09/26/2025\n" << "Lab 5 - TTTFileWrite\n\n";
    srand(time(0));
	while (playing == true)
	{
		display();
		choose();
	}

	cout << "\n";
}

//Display Numbers
void display(void)
{
	for (int i = 0; i < 9; i += 3)
	{
		cout << n[i] << "    " << n[i + 1] << "    " << n[i + 2] << "\n\n";
	}
}

//WIN FUNCTION
void win()
{
    string result = "";

    //Horizontal Wins
    for (int i = 0; i <= 6; i += 3)
    {
        if (n[i] == n[i + 1] && n[i] == n[i + 2])
        {
            display();
            if (ttt == false)
            {
                cout << "\nX got a " << i + 1 << "-" << i + 2 << "-" << i + 3 << " Horizontal Win!";
                result = "X won with a " + to_string(i + 1) + "-" + to_string(i + 2) + "-" + to_string(i + 3) + " Horizontal Win!";
            }
            else
            {
                cout << "\nO got a " << i + 1 << "-" << i + 2 << "-" << i + 3 << " Horizontal Win!";
                result = "O won with a " + to_string(i + 1) + "-" + to_string(i + 2) + "-" + to_string(i + 3) + " Horizontal Win!";
            }
            pwin = true;
        }
    }

    //Vertical Wins
    for (int i = 0; i <= 2; i++)
    {
        if (n[i] == n[i + 3] && n[i] == n[i + 6])
        {
            display();
            if (ttt == false)
            {
                cout << "\nX got a " << i + 1 << "-" << i + 4 << "-" << i + 7 << " Vertical Win!";
                result = "X won with a " + to_string(i + 1) + "-" + to_string(i + 4) + "-" + to_string(i + 7) + " Vertical Win!";
            }
            else
            {
                cout << "\nO got a " << i + 1 << "-" << i + 4 << "-" + to_string(i + 7) + " Vertical Win!";
                result = "O won with a " + to_string(i + 1) + "-" + to_string(i + 4) + "-" + to_string(i + 7) + " Vertical Win!";
            }
            pwin = true;
        }
    }

    //Diagonal Wins
    if (n[0] == n[4] && n[0] == n[8])
    {
        display();
        if (ttt == false)
        {
            cout << "\nX got a 1-5-9 Diagonal Win!";
            result = "X won with a 1-5-9 Diagonal Win!";
        }
        else
        {
            cout << "\nO got a 1-5-9 Diagonal Win!";
            result = "O won with a 1-5-9 Diagonal Win!";
        }
        pwin = true;
    }
    if (n[2] == n[4] && n[2] == n[6])
    {
        display();
        if (ttt == false)
        {
            cout << "\nX got a 3-5-7 Diagonal Win!";
            result = "X won with a 3-5-7 Diagonal Win!";
        }
        else
        {
            cout << "\nO got a 3-5-7 Diagonal Win!";
            result = "O won with a 3-5-7 Diagonal Win!";
        }
        pwin = true;
    }

    //DRAW
    int count = 0;
    for (int i = 0; i < 9; i++)
    {
        if (n[i] == 'X' || n[i] == 'O')
            count++;
    }
    if (count == 9 && !pwin)
    {
        display();
        cout << "\nIt's a Draw!";
        result = "Draw game!";
        pwin = true;
    }

    if (pwin == true)
    {
        //Result to File
        ofstream fout("TTTwins.txt", ios::app);
        if (fout)
        {
            fout << result << endl;
            fout.close();
        }

        // Ask if they want to play again
        char p;
        cout << "\n\nPlay Again? - Y (YES), N (NO): ";
        cin >> p;

        if (p == 'N' || p == 'n')
        {
            //Displays File Results
            ifstream wins("TTTwins.txt");
            string line;
            cout << "\n\nTic Tac Toe Results: \n\n";
            while (getline(wins, line))
            {
                cout << line << endl;
            }
            wins.close();
            playing = false;
        }
        else if (p == 'Y' || p == 'y')
        {
            //Reset board and variables
            for (int i = 0; i < 9; i++)
            {
                n[i] = '1' + i;
            }
            ttt = true;
            pwin = false;
            choice = 0;
            cout << "\nNew Game:\n\n";
        }
    }
}

//Makes sure choice is valid
void check()
{
	while (choice > 9 || choice < 1 || n[choice - 1] == 'X' || n[choice - 1] == 'O')
	{

		if (choice > 9 || choice < 1)
		{
			cout << "\nChoose a number 1-9: "; cin >> choice;
		}
		else if (n[choice - 1] == 'X' || n[choice - 1] == 'O')
		{
			cout << "\nNumber already chosen, choose again: "; cin >> choice;
		}
	}
}

//Prompts choice and replaces numbers
void choose()
{
    if (!ttt)
    {
        computerMove();
        win();
        return;
    }

    cout << "\nMake a choice: ";
    cin >> choice;

    check();

    n[choice - 1] = 'X';
    ttt = false;

    win();
}

void computerMove()
{
    vector<int> freeSpaces;

    for (int i = 0; i < 9; i++)
    {
        if (n[i] != 'X' && n[i] != 'O')         //Makes new vector for the numbers
            freeSpaces.push_back(i);
    }

    if (!freeSpaces.empty())
    {
        int r = rand() % freeSpaces.size();
        int spot = freeSpaces[r];
        n[spot] = 'O';
        ttt = true; //X Turn
        cout << "\nComputer Choice: " << spot + 1 << "\n";
    }
}