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Tag Archives: cpp-virtual

Virtual Function in C++ A virtual function is a member function which is declared within a base class and is re-defined(Overridden) by a derived class.… Read More
The answer to this question depends upon 2 scenarios: Scenario 1: When there is a Virtual function in the program: In this scenario, compiler automatically… Read More
1. What is a pure virtual function? Ans. A pure virtual function (or abstract function) in C++ is a virtual function for which we don’t… Read More
Binding refers to the process of converting identifiers (such as variable and performance names) into addresses. Binding is done for each variable and functions. For… Read More
Function overriding is a redefinition of the base class function in its derived class with the same signature i.e. return type and parameters. But there may… Read More
Prerequisite: Virtual Function in C++Calling virtual functions from a constructor or destructor is considered dangerous most of the times and must be avoided whenever possible.… Read More
A virtual function is a member function which is declared within a base class and is re-defined (overridden) by a derived class. When you refer… Read More
Predict the output of the following simple C++ program without any virtual function. #include <iostream> using namespace std;    class Base { public:     void print()… Read More
A pure virtual destructor can be declared in C++. After a destructor has been created as a pure virtual object(instance of a class), where the… Read More
Sometimes implementation of all function cannot be provided in a base class because we don’t know the implementation. Such a class is called abstract class.… Read More
In Java, we can use final for a function to make sure that it cannot be overridden. We can also use final in Java to… Read More
Virtual functions are member functions that are declared in the base class using the keyword virtual and can be overridden by the derived class. They… Read More
A virtual function is a member function that is declared in the base class using the keyword virtual and is re-defined (Overridden) in the derived… Read More
A virtual function can be private as C++ has access control, but not visibility control. As mentioned virtual functions can be overridden by the derived… Read More

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