How to create a pure virtual function?

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class A { public: void f(); protected: A() {} A(const A&){} }; Examine the class declaration shown above. Why are the default and copy constructors declared as protected? 1. To ensure that A cannot be created via new by a more derived class 2. To ensure that A cannot be copied 3. To ensure that A cannot be used as a base class except when public inheritance has been used 4. To ensure that A cannot be created/copied outside the inheritance chain 5. To ensure that A cannot be instantiated as a static variable

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Write about all the implicit member functions of a class?

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What are the types of pointer?

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Write a corrected statement in c++ so that the statement will work properly. x =+ 7;

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What is a responder chain?

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What is an iterator?

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How do you declare a set in c++?

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What is c++ stringstream?

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Which coding certification is best?

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write a c++ program that gives output 4 3 4 2 3 4 1 2 3 4 using looping statement

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What is c++ mutable?

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