Listing 4. Three functional methods.

class Date{ int month, day, year;// private data members public: Date(int mo, int da, int yr);//public constructor Date operator+(int n);//overloaded operator function void Display();//display the date void AdjustMonth(int m);// +/- m months int DayOfWeek();//return 0-6 = Sun-Sat };// note the required semicolon