What is #include iostream in c++?

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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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How to avoid changing constant values?

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What is a class template in c++?

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What apps are written in c++?

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What is a string example?

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write a program that withdrawals,deposits,balance check,shows mini statement. (using functions,pointers and arrays)

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What is a map in c++?

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Is vector a class in c++?

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Can we make copy constructor private in c++?

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Explain dangling pointer.

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What methods can be overridden in java?

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