If the line:friend class A;appears in class B, and the line:friend class B;appears in class C, then:a.Class A is a friend of class C.b.Class A can access private variables of class B.c.Class C can call class A’s private member functions.d.Class B can access class A’s private variables.

What happens when we declare a function as a friend?Select one:a.We allow the function to have access to the public members of the classb.We allow the function to have access to the private and protected members of the classc.We do not allow the function to have access to the private and protected members of the classd.We allow the function to have access to the protected members but not the private members of the class

Which of the following access specifies is used in a class definition by default?a.Friendb.Privatec.Protectedd.Public

Once an object is declared as a friend, _________________________.

class Person {public: int id_; Person* friends_; int num_friends_;};Außerdem sei folgende Speicherbelegung gegeben:Adresse ... 1  2  3  4  5  6  7  8 9 10 11 12 13 14 15 16 ...Wert ... 7 251111141421505210

What is the output of the following snippet? #include <iostream> using namespace std; class C1 { friend class C2; protected: int y; public: int z; private: int x; public: C1() { x = y = z = 11; } }; class C2 { public: C1 a; C2 () { a.x = 22; }; void foo() { cout << a.x << a.y << a.z; } }; int main() { C2 c; c.foo(); return 0; } 111122 Compilation fails 112211 221111