Tips: Access Rights in C++

• Use the protected keyword where ever possible for stop the data member to access out side world. 
• Avoid the use of public keyword to expose the data members in the class.
• Use the protected keyword where ever possible, So that the derived classes have an access to them.
• To access the data from the class, use the member function (like get/set function). If the class might be inherited, then protected may be a good choice for that member function.
• By default access specifier for the class (member) is private. 

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