Public Private Protected C
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Public Private Protected C
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In this tutorial, we will learn to use public, protected and private inheritance in C++ with the help of examples.
In C++ inheritance , we can derive a child class from the base class in different access modes. For example,
Notice the keyword public in the code
This means that we have created a derived class from the base class in public mode . Alternatively, we can also derive classes in protected or private modes.
These 3 keywords ( public , protected , and private ) are known as access specifiers in C++ inheritance.
public , protected, and private inheritance have the following features:
Note: private members of the base class are inaccessible to the derived class.
Here, we have derived PublicDerived from Base in public mode .
Since private and protected members are not accessible, we need to create public functions getPVT() and getProt() to access them:
Here, we have derived ProtectedDerived from Base in protected mode .
As we know, protected members cannot be accessed directly.
As a result, we cannot use getPVT() from ProtectedDerived . That is also why we need to create the getPub() function in ProtectedDerived in order to access the pub variable.
Here, we have derived PrivateDerived from Base in private mode .
As we know, private members cannot be accessed directly.
As a result, we cannot use getPVT() from PrivateDerived . That is also why we need to create the getPub() function in PrivateDerived in order to access the pub variable.
C++ friend Function and friend Classes
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Yes (inherited as protected variables)
Yes (inherited as private variables)
Yes (inherited as private variables)
Access Modifiers - C # Programming Guide | Microsoft Docs
Public , Protected and Private Inheritance in C ++ Programming
Difference between private , public , and protected modifiers in C ++
C # Access Modifiers ( Public , Private , Protected , Internal) - Tutlane
C ++ для начинающих private , public , protected – С++ для начинающих
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Data hiding is one of the important features of Object Oriented Programming which allows preventing the functions of a program to access directly the internal representation of a class type. The access restriction to the class members is specified by the labeled access modifiers − public, private, and protected sections within the class body.
The default access for members and classes is private.
A public member is accessible from anywhere outside the class but within a program. You can set and get the value of public variables without any member.
A private member variable or function cannot be accessed, or even viewed from outside the class. Only the class and friend functions can access private members.
A protected member variable or function is very similar to a private member but it provided one additional benefit that they can be accessed in child classes which are called derived classes.
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