Question

When do we use the protected visibility specifier to a class member?

Answer 1

Protected variables allow access to the variables only from sub-classes and classes within the same package. Protected variables can be useful if you want your data to be read-only, or when you want to abstract your data. However, you can just use private variables with getters and setters methods.

Answer 2

When we want a member function within a class to access a data member as well as member functions that are immediately derived from it, we use the visibility modifier protected.

what is a member functions class?

• A class's member function is a function that, like any other variable, has its definition or prototype in the class's definition.
• It has access to all members of the class for which it is a member and can operate on any object of that class.

How can another class gain access to a class's protected members?

The protected members of the class can be accessed through the parent and child classes of the class. The term "default access specifier" isn't a key phrase; it's used when no other access specifiers are specified.

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