Friends can access private members of a class. : Friend « Class « C++

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C++ » Class » Friend Screenshots  Friends can access private members of a class.    #include <iostream> using std::cout; using std::endl; class Count {    friend void setX( Count &, int );  public:    Count() { x = 0; }                    void print() const { cout << x << endl; } private:    int x; };  void setX( Count &c, int val ) {    c.x = val;  // legal: setX is a friend of Count } int main() {    Count counter;    cout << "counter.x after instantiation: ";    counter.print();    cout << "counter.x after call to setX friend function: ";    setX( counter, 8 );  // set x with a friend    counter.print();    return 0; }            Related examples in the same category 1. Friend function Demo 2. Make the inserter into a friend function 3. Define friend function for << 4. friend class for each other 5. Use friend function to access the non-public member variable