C++ Inline Function Question:
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Explain what are static member functions?

Answer:

Static member functions are used to maintain a single copy of a class member function across various objects of the class. Static member functions can be called either by itself, independent of any object, by using class name and :: (scope resolution operator) or in connection with an object.

Restrictions on static member functions are:
1. They can directly refer to other static members of the class.
2. Static member functions do not have this pointer.
3. Static member function can not be virtual.

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