/*
Friend classes are able to acess the private and protected members
of the class within which the friend keyword is used.
*/
#include <iostream>
using namespace std;
class XYZ
{
  private:
    char ch = 'A';
    int num = 11;

  public:
    /* This statement would make class ABC
    * a friend class of XYZ, this means that
    * ABC can access the private and protected
    * members of XYZ class.
    */
    friend class ABC;
};
class ABC
{
  public:
    void disp(XYZ obj)
    {
        cout << obj.ch << endl;
        cout << obj.num << endl;
    }
};
int main()
{
    ABC obj;
    XYZ obj2;
    obj.disp(obj2);
    return 0;
}