Tic Tac Toe....cpp

#include <iostream>
#include <fstream>
using namespace std;
const int n = 100;
int z = 0;
int m = 0;
int z1 = 0;

void save(char** a, int k)				//filing to save game
{
	ofstream f1;
	f1.open("Save Slot.txt");
	f1 << k << endl;
	f1 << z << endl;
	for (int i = 0; i < k; i++)
	{
		for (int j = 0; j < k; j++)
		{
			f1 << a[i][j];
		}
		f1 << endl;
	}
	f1.close();
}

void printboard(int** a, int k)
{
	int a1 = 1;
	for (int i = 0; i < k; i++)
	{
		for (int j = 0; j < k; j++)
		{
			a[i][j] = a1;
			a1++;
			if (j < k - 1)
			{
				cout << a[i][j] << "|" << "\t";

			}
			if (j == k - 1)
			{
				cout << a[i][j] << "\t";
			}
		}
		if (i < k - 1)
		{
			cout << endl;
			for (int i = 0; i < k; i++)
			{
				cout << "------";
			}
			cout << endl;
		}
		if (i == k - 1)
		{
			cout << endl;
		}

	}
	cout << endl << endl << endl;
}

void printboard1(char** a, int k)
{
	int x = 0;
	cout << "Player X turn: ";
	cin >> x;
	int a1 = 1;

	if (x == -1)
	{
		save(a, k);
	}

	if (x > 0 && x <= k * k)
	{
		for (int i = 0; i < k; i++)
		{
			for (int j = 0; j < k; j++)
			{
				if (a1 == x)
				{
					if (a[i][j] == '\0')
					{
						a[i][j] = 'X';
					}
					else
					{

						cout << "Invalid Move " << x << " is Already taken Try Again\n";
						z--;
						z1 = 1;
					}
				}
				a1++;
			}

		}
	}
	else if (x != -1)
	{

		cout << "Invalid Move range (1-" << k * k << ") Try Again\n";
		z--;
		z1 = 1;
	}
	if (x != -1 && z1 != 1)
	{
		for (int i = 0; i < k; i++)
		{
			for (int j = 0; j < k; j++)
			{

				if (j < k - 1)
				{
					cout << a[i][j] << "|" << "\t";

				}
				if (j == k - 1)
				{
					cout << a[i][j] << "\t";
				}
			}
			if (i < k - 1)
			{
				cout << endl;
				for (int i = 0; i < k; i++)
				{
					cout << "------";
				}
				cout << endl;
			}
			if (i == k - 1)
			{
				cout << endl;
			}

		}
		cout << endl << endl << endl;
	}
	if (x == -1 || z1 > !0)
	{
		cout << "Game Saved\n";
		z = m + 1;
	}
	z1 = 0;
}

void printboard2(char** a, int k)
{


	int x = 0;
	cout << "Player O turn: ";
	cin >> x;
	int a1 = 1;

	if (x == -1)
	{
		save(a, k);
		z = m + 1;
	}

	if (x > 0 && x <= k * k)
	{
		for (int i = 0; i < k; i++)
		{
			for (int j = 0; j < k; j++)
			{
				if (a1 == x)
				{
					if (a[i][j] == '\0')
					{
						a[i][j] = 'O';
					}
					else
					{

						cout << "Invalid Move " << x << " is Already taken Try Again\n";
						z--;
						z1 = 1;

					}
				}
				a1++;
			}

		}
	}
	else if (x != -1)
	{

		cout << "Invalid Move range (1-" << k * k << ") Try Again\n";
		z--;
		z1 = 1;
	}
	if (x != -1 && z1 != 1)
	{
		for (int i = 0; i < k; i++)
		{
			for (int j = 0; j < k; j++)
			{

				if (j < k - 1)
				{
					cout << a[i][j] << "|" << "\t";

				}
				if (j == k - 1)
				{
					cout << a[i][j] << "\t";
				}
			}
			if (i < k - 1)
			{
				cout << endl;
				for (int i = 0; i < k; i++)
				{
					cout << "------";
				}
				cout << endl;
			}
			if (i == k - 1)
			{
				cout << endl;
			}

		}
		cout << endl << endl << endl;
	}
	if (x == -1 || z1 > !0)
	{
		cout << "Game Saved\n";
		z = m + 1;
	}
	z1 = 0;
}

void playerX(char** a, int k)
{
	int i = 0, b = 0;

	for (; i < k; i++)
	{
		b = 0;
		for (int j = 0; j < k; j++)
		{
			if (a[i][j] == 'X')
			{
				b++;
			}
		}
		if (b == k)
		{
			cout << "Player X Wins\n";
			i = k;
			z = m + 1;
		}
	}


	for (b = 0, i = 0; i < k; i++)
	{
		b = 0;
		for (int j = 0; j < k; j++)
		{
			if (a[j][i] == 'X')
			{
				b++;
			}
		}
		if (b == k)
		{
			cout << "Player X Wins\n";
			i = k;
			z = m + 1;
		}
	}

	b = 0;
	for (int j = 0, i = 0; j < k; j++, i++)
	{
		if (a[i][j] == 'X')
		{
			b++;
		}
	}
	if (b == k)
	{
		cout << "Player X Wins\n";
		z = m + 1;
	}

	b = 0;
	for (int j = k - 1, i = 0; i < k; j--, i++)
	{
		if (a[i][j] == 'X')
		{
			b++;
		}
	}
	if (b == k)
	{
		cout << "Player X Wins\n";
		z = m + 1;
	}


}

void playerO(char** a, int k)
{
	int i = 0, b = 0;

	for (b = 0; i < k; i++)
	{
		b = 0;
		for (int j = 0; j < k; j++)
		{
			if (a[i][j] == 'O')
			{
				b++;
			}
		}
		if (b == k)
		{
			cout << "Player O Wins\n";
			i = k;
			z = m + 1;
		}
	}

	b = 0;
	for (i = 0; i < k; i++)
	{
		b = 0;
		for (int j = 0; j < k; j++)
		{
			if (a[j][i] == 'O')
			{
				b++;
			}
		}
		if (b == k)
		{
			cout << "Player O Wins\n";
			i = k;
			z = m + 1;
		}
	}

	b = 0;
	for (int j = 0, i = 0; j < k; j++, i++)
	{
		if (a[i][j] == 'O')
		{
			b++;
		}
	}
	if (b == k)
	{
		cout << "Player O Wins\n";
		z = m + 1;
	}

	b = 0;
	for (int j = k - 1, i = 0; i < k; j--, i++)
	{
		if (a[i][j] == 'O')
		{
			b++;
		}
	}
	if (b == k)
	{
		cout << "Player O Wins\n";
		z = m + 1;
	}


}

void turns(char** a, int k)
{
	m = k * k;
	for (; z < m;)
	{
		if (z % 2 == 0)
		{
			printboard1(a, k);
			playerX(a, k);
			z++;
		}

		if (z % 2 != 0 && z < m)
		{
			printboard2(a, k);
			playerO(a, k);
			z++;
		}

	}
	if (z == m)
	{
		cout << "Draw\n";
	}
}

void load(char** a, int k)				//Load game from save file
{
	ifstream f2;
	f2.open("Save Slot.txt");
	if (f2)
	{
		f2 >> k;
		f2 >> z;
		for (int i = 0; i < k; i++)
		{
			for (int j = 0; j < k; j++)
			{
				f2 >> a[i][j];

			}
		}
		for (int i = 0; i < k; i++)
		{
			for (int j = 0; j < k; j++)
			{
				if (j < k - 1)
				{
					cout << a[i][j] << "|" << "\t";

				}
				if (j == k - 1)
				{
					cout << a[i][j] << "\t";
				}
			}
			if (i < k - 1)
			{
				cout << endl;
				for (int i = 0; i < k; i++)
				{
					cout << "------";
				}
				cout << endl;
			}
			if (i == k - 1)
			{
				cout << endl;
			}

		}
		cout << endl << endl << endl;
		turns(a, k);
	}

	else
	{
		cout << "No file saved";
	}
	f2.close();
}

int main()
{
	cout << "Instructions\nPress 1 to start a new game\nPress 2 to load the previous game\nPress -1 at any point to save the game and exit\nChoice: ";
	int g = 0;
	cin >> g;
	int** a;					//Initializatiion of 2d pointer (int)
	char** b;					//Initializatiion of 2d pointer (char)
	int k = 0;
	for (int t = 1; t < 3;)
	{
		if (g < 1 || g > 2)
		{
			cout << "Invalid Move Please Select from the Given Instructions Try Again\nChoice: ";
			cin >> g;
		}
		else
		{
			t = 3;
		}
	}

	if (g != 2)
	{
		cout << "Size of Square NxN: ";
		cin >> k;
		for (; k < 3;)
		{
			cout << "Invalid Move Size of Square should be >= 3 Try Again\n";
			cout << "Size of Square NxN: ";
			cin >> k;
		}
		a = new int* [k];					//memory allocation of int pointer according to k (size of Game) 
		for (int i = 0; i < k; i++)
		{
			a[i] = new int[k];
		}

		printboard(a, k);

		for (int i = k - 1; i >= 0; i--)  //deallocation of 2d pointer
			delete[]a[i];
		delete[]a;

	}

	if (g == 2)
	{
		ifstream f2;
		f2.open("Save Slot.txt");
		f2 >> k;
	}

	b = new char* [k];						//memory initialization of int pointer according to k (size of Game) 
	for (int i = 0; i < k; i++)
	{
		b[i] = new char[k];
	}
	for (int i = 0; i < k; i++)
	{
		for (int j = 0; j < k; j++)
		{
			b[i][j] = '\0';
		}
	}

	if (g == 1)
	{
		turns(b, k);
	}
	if (g == 2)
	{
		load(b, k);
	}
	for (int i = k - 1; i >= 0; i--)		//deallocation of 2d pointer
		delete[]b[i];
	delete[]b;

	system("pause");
	return 0;
}