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What are the characteristics of member function outside a class?

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The member functions declared outside a class has the following characteristics:

  1. Data type and number of argument in member function must be same as data types and number of data declared in class definition.
  2. Type scope resolution operator (::) helps in defining the member function outside the class. It also identifies the function as a member of particular class.
  3. The different classes can use same member function names. Membership label will resolve their scope limiting a particular class.
  4. Member function can access private and protected data of a class, but not a non-member function.

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