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what are the disadvantages of C++?
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There is not so strict/strong type checking in C++ like Java & C#. Pointers can be easily be misused. Dynamic memory management is error-prone because the lack of automatic garbage collection like Java & C#. There isn't bound checking on arrays. Friend functions & friend classes can be misused.
Supports stack allocated objects so results in memory wastage but provides runtime efficiency.
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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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