Tic Tac Toe 2 players in C++

#include <iostream>
#include <stdlib.h>
#include<bits/stdc++.h>
using namespace std;
char Board[3][3] = {{'1','2','3'},{'4','5','6'},{'7','8','9'}};
int choice;
int row,column;
char turn = 'X';
bool draw = false;



void display_board(){
    cout<<"\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n";
    cout<<"\t\t\t\t     |     |     \n";
    cout<<"\t\t\t\t  "<<Board[0][0]<<"  | "<<Board[0][1]<<"   |  "<<Board[0][2]<<" \n";
    cout<<"\t\t\t\t_____|_____|_____\n";
    cout<<"\t\t\t\t     |     |     \n";
    cout<<"\t\t\t\t  "<<Board[1][0]<<"  | "<<Board[1][1]<<"   |  "<<Board[1][2]<<" \n";
    cout<<"\t\t\t\t_____|_____|_____\n";
    cout<<"\t\t\t\t     |     |     \n";
    cout<<"\t\t\t\t  "<<Board[2][0]<<"  | "<<Board[2][1]<<"   |  "<<Board[2][2]<<" \n";
    cout<<"\t\t\t\t     |     |     \n";
}



void player_turn()
{
    if(turn == 'X')
    {
        cout<<"\n\n    Player1 [X] turn : ";
    }
    else if(turn == 'O')
    {
        cout<<"\n\n    Player2 [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<<"Invalid Move";
    }

    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<<"\n Box already filled!\n Choose another one!\n\n";
        player_turn();
    }
    display_board();
}



bool gameover()
{
    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][2] == Board[2][0])
    return false;

    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;

    draw = true;
    return false;
}



int main()
{
    display_board();
    while(gameover())
    {
        player_turn();

    }
    if(turn == 'O' && draw == false)
    {
        cout<<"\n\n Congratulations...\n Player with 'X' has won the game";
    }
    else if(turn == 'X' && draw == false)
    {
        cout<<"\n\n Congratulations...\n Player with 'O' has won the game";
    }
    else
    cout<<"\n\n  GAME DRAW  \n\n";
}