友元

#include <iostream>
using namespace std;
class Me{
private:
int id;
int money;
friend void test(void);
friend class MyBestFriend;
};
class MyBestFriend{
public:
MyBestFriend(){
Me m;
m.money = 100;
cout << m.money << endl;
}
};
void test(void){
Me m;
m.id = 3;
cout << m.id << endl;
}
int main(){
test();
MyBestFriend mbf;
cout << "letben" << endl;
system("pause");
return 0;
}