Apr 22, 2017 · You should make a function private when you don't need other objects or classes to access the function, when you'll be invoking it from within the class. Stick to the principle of least privilege , only allow access to variables/functions that are absolutely necessary.

Aug 5, 2021 · In C++, Private members of a class are accessible only within the class they are declared and by friend functions, they are not accessible outside the class not even by derived classes. In this article, we will learn how to access private variables in C++.

But private means "not accessible from outside the class", i.e. only functions of the class can call private functions. If you don't want (human) users of your class see these implementation details, you need to use a suitable design patterns (facade pattern e.g.).

Oct 15, 2019 · The class members declared as private can be accessed only by the functions inside the class. The data members and member functions declared public can be accessed by other classes too. Only the member functions or the friend functions are allowed to access the private data members of a class.

Apr 3, 2013 · if you want to call the function declared in private, and if you want to call it from anywhere, you have to call a function in the public section(or protected for inherited classes), and from that you have to call this private function.

May 21, 2024 · In C++, Private members of a class are accessible only within the class they are declared and by friend functions, they are not accessible outside the class not even by derived classes. In this article, we will learn how to access private variables in C+ +.

Mar 3, 2022 · How to access the Private Member Function in C++? A function declared inside the private access specifier of the class, is known as a private member function. A private member function can be accessed through the only public member function of the same class.

Sep 19, 2018 · A function declared inside the class's private section is known as "private member function". A private member function is accessible through the only public member function. (Read more: data members and member functions in C++ ).

Apr 12, 2017 · Private member functions may be virtual, and in common implementations of C++ (that use a vtable) the specific order and number of virtual functions is required to be known by all clients of the class. This applies even if one or more of the virtual member functions is private.

Jun 17, 2014 · Making a function a static member of a class rather than a free function gives two advantages: It gives the function access to private and protected members of any object of the class, if the object is static or is passed to the function; It associates the function with the class in a similar way to a namespace.