Answer Posted / gp

Class which cannot be initiated is an abstract class.
You can make a class abstract by declaring a pure virtual method inside the class. For example:

class base
{
void func()=0;
};

void main()
{
base b;
}

Now you cannot instantiate base class.
The class which inherits this base class will also become abstract unless you define a body of the func() method in inherited class.

What do you mean by abstraction?

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i got a backdoor offer in process global,Bangalore..Can i work with it?

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class type to basic type conversion

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What are functions in oop?

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What is a function in oop?

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What is the importance of oop?

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What is the real life example of polymorphism?

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What is the purpose of enum?

978

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What is interface in oop?

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They started with the brief introduction followed by few basic C++ questions on polumorphism, inheritance and then virtual functions. What is polymorphims? How you will access polymorphic functions in C? How virtual function mechanism works?

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What makes a language oop?

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can we make game by using c

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What is the difference between static polymorphism and dynamic polymorphism?

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Who invented oop?

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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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