friend classes in c++
A friend class in C++, can access the private.protected and public members of the class in which it is declared as a friend. On declaration of friend class all member function of the friend class become friends of the class in which the friend class was declared. Friend status is not inherited; every friendship has to be explicitly declared.
Example
#include <iostream>
class B
{
// B declares A as a friend...
friend class A;
private:
void privatePrint()
{
std::cout << "firend classes" << std::endl;
}
};
class A
{
public:
A()
{
B b;
// ... and A now has access to B's private members
b.privatePrint();
}
};
int main()
{
A a;
getchar();
return 0;
}
