tYSR20

208Part III: Introduction to ClassesAn entire class can be named a friend of another. This has the effect ofmaking every member function of the class a friend:class Student; // forward declarationclass Teacher{protected:int noStudents;Student *pList[100];public:void assignGrades();};class Student{friend class Teacher; // make entire class a friendpublic:// same public members as before...protected:int semesterHours; // hours earned toward graduationfloat gpa;};Now, any member function of Teacher has access to the protected membersof Student. Declaring one class a friend of the other inseparably binds thetwo classes together.