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What is byval and byref? What are differences between them?

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c++ program to swap the objects of two different classes

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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 is a class in oop?

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What is class encapsulation?

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What is Difeerence between List obj=new ArrayList(); and ArrayList obj=new ArrayList()?

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why constructor cannt be declar virtually? why destructor cannt be overloaded?

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what is the sylabus for priliminaries?

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What are the main differences between procedure oriented languages and object oriented languages?

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can you give real time example for polymarphism

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Difference between vector and array

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What is difference between #define and const?

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