Answer / harendra pal

An abstract class is a protocol class if:
 it neither contains nor inherits from classes that contain member data, non-virtual functions, or private (or protected) members of any kind.
 it has a non-inline virtual destructor defined with an empty implementation,
 all member functions other than the destructor including inherited functions, are declared pure virtual functions and left undefined.

What is dynamic and static typing?

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Write a C++ Program to Multiply two Numbers

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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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i have given a project to create examination seating plan system in c++. so can anyone send me the answer of this question quickly??????

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Is swift a good first language?

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If dog is a friend of boy, is boy a friend of dog?

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What is singleton pattern in c++?

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Explain RAII (Resource Acquisition Is Initialization).

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