Описание глобальных переменных

#include <iostream>
#include <stdlib.h>
#include "function.h"
 
 
using namespace std;

char cells[9]={'-', '-', '-', '-', '-', '-', '-', '-', '-'};
char PlayerName1[40];
char PlayerName2[40];
char win='-';

#pragma once
#include <iostream>
#pragma once
#include "function.h"
 
using namespace std;
 
char cells[9]={'-', '-', '-', '-', '-', '-', '-', '-', '-'};
char PlayerName1[40];
char PlayerName2[40];
char win='-';

char cells[9]={'-', '-', '-', '-', '-', '-', '-', '-', '-'};

extern char cells[9];

#if  defined E
#define ex 
#else
#define ex extern
#endif
ex char cells[9];

#include <iostream>
#include <stdlib.h>
#include "function.h"
 
 
using namespace std;
 
 
void main()
{
 
    
    cout<<"Enter the name of the 1st player: ";
    cin>>PlayerName1;
    cout<<"Enter the name of the 2st player: ";
    cin>>PlayerName2;
    cout<<"\n";
 
    show_cells();
 
    for (int move=1; move<=9; move++)
    {
        if (move%2) make_move(1);
        else make_move(2);
        show_cells();
        if(move>=5) 
        {
            win=check();
            if(win!='-')
                break;
        }
    }
 
    result();
}

#pragma once
#include <iostream>
 
using namespace std;
 
 
char cells[9]={'-', '-', '-', '-', '-', '-', '-', '-', '-'};
 
 
void show_cells()
{
    cout<<"------------" <<"\n"<<endl;
    cout<<"Numbers of cells:"<<endl;
    cout<<"-"<<1 <<"-"<<'|'<<"-"<<2<<"-"<<'|'<<"-"<<3<<"-"<<"|"<<endl;
    cout<<"-"<<4<<"-"<<'|'<<"-"<<5<<"-"<<'|'<<"-"<<6<<"-"<<"|"<<endl;
    cout<<"-"<<7<<"-"<<'|'<<"-"<<8<<"-"<<'|'<<"-"<<9<<"-"<<"|"<<"\n"<<endl;
 
    cout<<"Current situation (--- is empty):"<<endl;
    cout<<"-"<<cells[0]<<"-"<<'|'<<"-"<<cells[1]<<"-"<<'|'<<"-"<<cells[2]<<"-"<<" |"<<endl;
    cout<<"-"<<cells[3]<<"-"<<'|'<<"-"<<cells[4]<<"-"<<'|'<<"-"<<cells[5]<<"-"<<"|"<< endl;
    cout<<"-"<<cells[6]<<"-"<<'|'<<"-"<<cells[7]<<"-"<<'|'<<"-"<<cells[8]<<"-"<<"|"<<"\n"<<endl;
    cout<<"------------\n"<<endl;
}
 
void make_move(int num)
{
    
    if(num==1) cout<<PlayerName1;
    else cout<<PlayerName2;
    cout<<", enter a cell's number to make move: ";
    int cell;
    cin>>cell;
    cout<<"\n";
    while(cell> 9||cell<1||cells[cell-1]=='O'||cells[cell-1]=='X')
    {
        cout<<"Enter a CORRECT (1-9) or EMPTY (---) cell's number to make move: ";
        cin>>cell;
        cout<<"\n";
    }
 
    if (num==1)
        cells[cell-1]='X';
    else 
        cells[cell-1]='O';
}
 
char check()
{
    int i;
    for(i=0; i<3; i++)
        if(cells[i*3+0]==cells[i*3+1]&&cells[i*3+1]==cells[i*3+2]&&cells[i*3+2]!='-')
            return cells[i*3+1];
        else if(cells[i]==cells[3+i]&&cells[3+i]==cells[6+i]&&cells[6+i]!='-')
            return cells[3+i];
    if((cells[0]==cells[4]&&cells[4]==cells[8]||
        cells[2]==cells[4]&&cells[4]==cells[6])&&
        cells[4]!='-')
        return cells[4];
    return '-';
}
 
void result()
{
    if (win=='X') cout<<PlayerName1<<"You win! Congratulations!"<<PlayerName2<<" is looser! Bugoga..."<<endl;
    else if (win=='O') cout<<PlayerName2<<" You win! Congratulations!"<<PlayerName1<<" is looser! Bugoga..."<<endl;
    else cout<<"Draw!!!"<<endl;
}

#pragma once
 
void show_cells();
void make_move(int num);
char check();
void result();
 
char win='-';
char PlayerName1[40];
char PlayerName2[40];