Answer Posted / pankaj
A scope resolution operator (::), can be used to define the
member functions of a class outside the class.
It shows the scope resolution operator untangling a mess
made by using the same names for different kinds of entities
base class overridden member function using the scope
resolution operator (: :)
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What is polymorphism in oops with example?
Question: Implement a base class Appointment and derived classes Onetime, Daily, Weekly, and Monthly. An appointment has a description (for example, “see the dentist”) and a date and time. Write a virtual function occurs_on(int year, int month, int day) that checks whether the appointment occurs on that date. For example, for a monthly appointment, you must check whether the day of the month matches. Then fill a vector of Appointment* with a mixture of appointments. Have the user enter a date and print out all appointments that happen on that date.
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