A C++ program for the classic Tic-Tac-Toe game built on Dev C++

TICTACTOE.CPP

/*
MIT License

Copyright (c) [2017] [Samyak Jain]

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE
*/
#include<iostream>
#include<conio.h>
#include<stdlib.h>
#include<stdio.h>
#include<string.h>

using namespace std;

void drawsym(char c,int i)  //parameters: character to print,number of prints
{
	for(int j=0;j<i;j++)
	{
		cout<<c;
	}
	cout<<"\n";
}
int toss() //to generate a random number between 1-100
{
	int i=rand();
	if(i%2==0)
	{
		return 1;
	}
	else
	{
		return 2;
	}
}
void display_board(char board[3][3]) //parameters: board
{
	system("cls");
	cout<<"\n\t\t\t\tTIC-TAC-TOE\n";
	drawsym('-',80);
	cout<<"\n__________ __________ __________";
	cout<<"\n          |          |";
	for(int i=0;i<3;i++)
	{
		cout<<"\n    "<<board[i][0]<<"     |    "<<board[i][1]<<"     |    "<<board[i][2]<<"\n";
		for(int j=0;j<3;j++)
		{
			cout<<"___"<<"_______|";
		}
		if(i!=2)
		{
			cout<<"\n          |          |";
			cout<<"\n          |          |";
		}
	}
	cout<<"\n";
}
int check_horizontal(char c,char board[3][3]) //parameters: character x or o and board
{
	int count;
	for(int i=0;i<3;i++)
	{
		count=0;
		for(int j=0;j<3;j++)
		{
			if(board[i][j]==c)
			{
				count++;
			}
			if(count==3)
			{
				return 1;
				break;

			}
		}
	}

}
int check_vertical(char c,char board[3][3]) //parameters: x or o and board
{
	int count;
	for(int i=0;i<3;i++)
	{
		count=0;
		for(int j=0;j<3;j++)
		{
			if(board[j][i]==c)
			{
				count++;
			}
			if(count==3)
			{
				return 1;
				break;
			}
		}
	}
}
int check_diagonal(char c,char board[3][3]) //parameters: x or o and board
{
	int count=0;
	for(int i=0;i<3;i++)
	{
		if(board[i][i]==c || board[i][2-i]==c)
		{
			count++;
		}
		if(count==3)
		{
			return 1;
			break;
		}
	}
}
void input(char board[3][3],char p1[20],char p2[20],int e,char x)
{
	char move,y;
	int p;
	char *player1[20],*player2[20];
	int tracker,rch1,rcv1,rcd1,rch2,rcv2,rcd2;
	if(x=='X' || x=='x')
	{
		y='O';
	}
	else if(x=='O' || x=='o')
	{
		y='X';
	}
	if(e==1)
	{
		*player1=p1;
		*player2=p2;
	}
	else if(e==2)
       {
		*player1=p2;
		*player2=p1;
	}
	for(p=1;p<10;p++)
	{
		tracker=0;
		if(p%2!=0)
		{
			cout<<"\n"<<*player1<<" please enter your move: ";
			move=getch();
			cout<<move;
		}
		if(p%2==0)
		{
			cout<<"\n"<<*player2<<" please enter your move: ";
			move=getch();
			cout<<move;
		}
		for(int i=0;i<3;i++)
		{
			for(int j=0;j<3;j++)
			{
				if(move==board[i][j] && p%2!=0)
				{
					board[i][j]=x;
					tracker+=1;
				       rch1=check_horizontal(x,board);
				       rcv1=check_vertical(x,board);
				       rcd1=check_diagonal(x,board);
				}
				if(move==board[i][j] && p%2==0)
				{
					board[i][j]=y;
					tracker+=1;
				       rch2=check_horizontal(y,board);
				       rcv2=check_vertical(y,board);
				       rcd2=check_diagonal(y,board);
				}
			}
		}
		if(tracker==0)
		{
			p--;
			cout<<"Unacceptable input!! Please try again....";
		}
		else
		{
			display_board(board);
		}
		if(rch1==1 || rcv1==1 || rcd1==1)
		{
			drawsym('-',80);
			cout<<*player1<<" WINS THE GAME!!\n";
			drawsym('-',80);
			break;
		}
		if(rch2==1 || rcv2==1 || rcd2==1)
		{
			drawsym('-',80);
			cout<<*player2<<" WINS THE GAME!!\n";
			drawsym('-',80);
			break;
		}
	}
	if(p==10)
	{
		cout<<"\n\nHey!! Game over.... No winner, no loser!";
	}
}
main()
{
	system("cls");
	char board[3][3]={'1','2','3',
			 '4','5','6',
			 '7','8','9'};
	int won,i=1,x1=1,x2=1;
	char p1[20]={0},p2[20]={0},x;
	cout<<"\n\t\t\t\tTIC-TAC-TOE\n";
	drawsym('-',80);
	while(x1<2)
	{
		if(strlen(p1)==0)
		{
			cout<<"\nPlayer 1: Please enter your name: ";
			gets(p1);
			x1=1;
		}
		else
		{
			cout<<"\n";
			drawsym('*',80);
			x1=2;
		}
	}
	while(x2<2)
	{
		if(strlen(p2)==0)
		{
			cout<<"\nPlayer 2: Please enter your name: ";
			gets(p2);
			x2=1;
		}
		else
		{
			cout<<"\n";
			drawsym('*',80);
			x2=2;
		}
	}
	won=toss();
	if(won==1)
	{
		cout<<p1<<" wins the toss!";
	while(i<2)
	{
		cout<<"\nPlease enter your choice(X or O): ";
		cin>>x;
		if(x=='X' || x=='O' || x=='x' || x=='o')
		{
		     i=2;
		}
		else
		{
			i=1;
		}
	}
	}
	else if(won==2)
	{
		cout<<p2<<" wins the toss!";
	while(i<2)
	{
		cout<<"\nPlease enter your choice(X or O): ";
		cin>>x;
		if(x=='X' || x=='O' || x=='x' || x=='o')
		{
		     i=2;
		}
		else
		{
			i=1;
		}
	}
	}
	display_board(board);
	input(board,p1,p2,won,x);
	getch();
}

void drawsym(char c,int i)  {
	for(int j=0;j<i;j++)
	{
		cout<<c;
	}
	cout<<"\n";
}

void displayBoard(char arr[3][3]) {
	drawsym('-',120);
	cout<<"\n\t\t\t\t\t       _______________________________";
	cout<<"\n\t\t\t\t\t      |          |          |         |";
	for(int i=0;i<3;i++)
	{
		cout<<"\n\t\t\t\t\t      |    "<<board[i][0]<<"     |    "<<board[i][1]<<"     |    "<<board[i][2]<<"    |\n";
		cout<<"\t\t\t\t\t      |__________|__________|_________|";
		if(i!=2)
		{
			cout<<"\n\t\t\t\t\t      |          |          |         |";
		}
	}
	cout<<"\n";
}

Here this is much cleaner. Great game tho.

```c++
void drawsym(char c,int i)  {
	for(int j=0;j<i;j++)
	{
		cout<<c;
	}
	cout<<"\n";
}

void displayBoard(char arr[3][3]) {
	drawsym('-',120);
	cout<<"\n\t\t\t\t\t       _______________________________";
	cout<<"\n\t\t\t\t\t      |          |          |         |";
	for(int i=0;i<3;i++)
	{
		cout<<"\n\t\t\t\t\t      |    "<<board[i][0]<<"     |    "<<board[i][1]<<"     |    "<<board[i][2]<<"    |\n";
		cout<<"\t\t\t\t\t      |__________|__________|_________|";
		if(i!=2)
		{
			cout<<"\n\t\t\t\t\t      |          |          |         |";
		}
	}
	cout<<"\n";
}

Here this is much cleaner. Great game tho.

Thanks for the contribution! Although this was nearly 4 years ago on the outdated Turbo C++, and I can no longer write c++😂