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What are virtual functions, base class pointer, derived class pointer, biding references?
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Which OOPS concept is used as a reuse mechanism?
What are abstract functions? Why are they used?
What if we override the conflicting method in the class?
Explain the concept of multiple inheritance (virtual inheritance). Write about its advantages and disadvantages?
Do we require a parameter for constructors?
What is a try/ catch block?
What is the difference between a virtual method and an abstract method?
Can encapsulation be called as a security device?
What are abstract classes?
Differentiate between overloading and overriding.
What is the main advantage of using inheritance?
Can different parts of a partial class inherit from different interfaces?
Design Patterns 
