Friend Classes

friend.cpp

#include <iostream>
using namespace std;
class A;
class B{
public:
    void oku(A& a);
    void yaz(A& a);
};
class A{
private:
    int degisken;
public:
    void method(){
        cout << degisken << endl;
    }
    friend void B::oku(A& a);
    friend void erisim(A& a);
};
void B::oku(A &a){
    cout << a.degisken << endl;
}
void erisim(A& a){
    cout << a.degisken << endl;
}
int main(){
    
}