tic tac toe cpp

#include "std_lib_facilities.h"
int main()
{
	vector<int>board;
	vector<int>ex;
	vector<int>oh;
	int num;
	int over=0;
	int xscore=0;
	int oscore=0;
	string again="y";
	cout<<endl;
	for(int i=0;i<10;++i)
	{
		ex.push_back(0);
	}
	for(int i=0;i<10;++i)
	{
		oh.push_back(0);
	}
	while(again=="y"||again=="Y")
	{

		for(int i=0;i<10;++i)
		{
			board.push_back(i);
			if(i!=0)
			{
				cout<<" "<<board[i]<<" ";
				if(i==3||i==6)
					cout<<"\n ---------\n";
				else if(i==9)
					cout<<endl;
				else
					cout<<"|";
			}
		}
		while(over==0)
		{
			if(over==0)
			{
				num=0;
				cout<<"\n\nX turn: ";
				cin>>num;
				while(num>9||num<1||oh[num]==1||ex[num]==1)
				{
					cout<<"\nCan't move there!\n";
					cout<<"\n\nX turn: ";
					cin>>num;
				}
				ex[num]=1;
				cout<<"\n\n\n\n";
				for(int i=0;i<10;++i)
				{
					board.push_back(i);
					if(i!=0)
					{
						if(ex[i]==1)
							cout<<" X ";
						else if(oh[i]==1)
							cout<<" O ";
						else
							cout<<" "<<board[i]<<" ";
						if(i==3||i==6)
							cout<<"\n ---------\n";
						else if(i==9)
							cout<<endl;
						else
							cout<<"|";
					}
				}
			}
			if((ex[1]==1&&ex[2]==1&&ex[3]==1)||(ex[4]==1&&ex[5]==1&&ex[6]==1)||(ex[7]==1&&ex[8]==1&&ex[9]==1)||(ex[1]==1&&ex[4]==1&&ex[7]==1)||(ex[2]==1&&ex[5]==1&&ex[8]==1)||(ex[3]==1&&ex[6]==1&&ex[9]==1)||(ex[1]==1&&ex[5]==1&&ex[9]==1)||(ex[3]==1&&ex[5]==1&&ex[7]==1))
				over=1;
			if((ex[1]==1||oh[1]==1)&&(ex[2]==1||oh[2]==1)&&(ex[3]==1||oh[3]==1)&&(ex[4]==1||oh[4]==1)&&(ex[5]==1||oh[5]==1)&&(ex[6]==1||oh[6]==1)&&(ex[7]==1||oh[7]==1)&&(ex[8]==1||oh[8]==1)&&(ex[9]==1||oh[9]==1))
				over=3;
			if(over==0)
			{
				num=0;
				cout<<"\n\nO turn: ";
				cin>>num;
				while(num>9||num<1||oh[num]==1||ex[num]==1)
				{
					cout<<"\nCan't move there!\n";
					cout<<"\n\nO turn: ";
					cin>>num;
				}
				oh[num]=1;
				cout<<"\n\n\n\n";
				for(int i=0;i<10;++i)
				{
					board.push_back(i);
					if(i!=0)
					{
						if(ex[i]==1)
							cout<<" X ";
						else if(oh[i]==1)
							cout<<" O ";
						else
							cout<<" "<<board[i]<<" ";
						if(i==3||i==6)
							cout<<"\n ---------\n";
						else if(i==9)
							cout<<endl;
						else
							cout<<"|";
					}
				}
			}
			if((oh[1]==1&&oh[2]==1&&oh[3]==1)||(oh[4]==1&&oh[5]==1&&oh[6]==1)||(oh[7]==1&&oh[8]==1&&oh[9]==1)||(oh[1]==1&&oh[4]==1&&oh[7]==1)||(oh[2]==1&&oh[5]==1&&oh[8]==1)||(oh[3]==1&&oh[6]==1&&oh[9]==1)||(oh[1]==1&&oh[5]==1&&oh[9]==1)||(oh[3]==1&&oh[5]==1&&oh[7]==1))
				over=2;
		}
		if(over==1)
		{
			xscore+=1;
			cout<<"\nX wins!!!\n\nX: "<<xscore<<"   O: "<<oscore<<"\n\nWould you like to play again?\n(Y/N): ";
		}
		else if(over==2)
		{
			oscore+=1;
			cout<<"\nO wins!!!\n\nX: "<<xscore<<"   O: "<<oscore<<"\n\nWould you like to play again?\n(Y/N): ";
		}
		else
		{
			cout<<"\nIt's a Tie!!!\n\nX: "<<xscore<<"   O: "<<oscore<<"\n\nWould you like to play again?\n(Y/N): ";
		}
		cin>>again;
		if(again=="n"||again=="N")
			cout<<"\n\nThanks for Playing!";
		else
			over=0;
		while(again!="Y"&&again!="y"&&again!="N"&&again!="n")
		{
			cout<<"Please type either a 'Y' or a 'N': ";
			cin>>again;
			if(again=="n"||again=="N")
				cout<<"\nThanks for Playing!";
			else if(again=="y"||again=="Y")
				over=0;
		}
		cout<<"\n\n";
		for(int i=0;i<10;++i)
		{
			ex[i]=0;
			oh[i]=0;
		}
	}
	cout<<"\n\n";
	keep_window_open();
	return 0;
}