Back-End Programming Exam > Back-End Programming Videos > Learn to Program with C++: Beginner to Expert > C++ Programming Tutorials - virtual Functions
C++ Programming Tutorials - virtual Functions Video Lecture | Learn to Program with C++: Beginner to Expert - Back-End Programming
|
73 videos|7 docs|23 tests
|
FAQs on C++ Programming Tutorials - virtual Functions Video Lecture - Learn to Program with C++: Beginner to Expert - Back-End Programming
| 1. What are virtual functions in C++ programming? |  |
Ans. Virtual functions in C++ are member functions that are declared within a base class and are meant to be overridden by derived classes. They allow the implementation of polymorphism, where a pointer or reference to the base class can be used to invoke the appropriate derived class function based on the actual object type.
| 2. How are virtual functions different from regular member functions in C++? | |
Ans. Virtual functions in C++ allow dynamic binding or late binding, which means that the function call is resolved at runtime based on the actual object type. Regular member functions, on the other hand, are resolved at compile-time based on the static type of the object. Virtual functions enable polymorphism and can be overridden in derived classes, while regular member functions cannot be overridden.
| 3. How are virtual functions implemented in C++? | |
Ans. Virtual functions in C++ are implemented using a virtual function table, also known as a vtable. Each class that contains at least one virtual function has a hidden pointer to its vtable. The vtable contains pointers to the virtual functions defined in the class. When a virtual function is called, the vtable is consulted to determine the correct function to invoke based on the object's actual type.
| 4. Can a virtual function have a different return type in the derived class than in the base class? | |
Ans. No, a virtual function in the derived class must have the same return type as the virtual function in the base class. The return type cannot be changed in the derived class; otherwise, it would violate the rules of function overriding. However, the derived class can choose to return a derived class pointer or reference, as long as it is compatible with the base class return type.
| 5. When should I use virtual functions in my C++ programs? | |
Ans. Virtual functions are useful when you have a hierarchy of classes and you want to provide a common interface for all derived classes. If you want to invoke a function based on the actual object type rather than the static type, virtual functions can be used. This allows for late binding and polymorphism, enabling more flexible and extensible code. Virtual functions are particularly useful in scenarios where you need to handle objects of different derived classes uniformly.
Related Exams
About this Video
|
4.70/5 Rating |
|
Oct 24, 2024 Last updated |
Video Description: C++ Programming Tutorials - virtual Functions for Back-End Programming 2024 is part of Learn to Program with C++: Beginner to Expert preparation.
The notes and questions for C++ Programming Tutorials - virtual Functions have been prepared according to the Back-End Programming exam syllabus.
Information about C++ Programming Tutorials - virtual Functions covers all important topics for Back-End Programming 2024 Exam.
Find important definitions, questions, notes, meanings, examples, exercises and tests below for C++ Programming Tutorials - virtual Functions.
Introduction of C++ Programming Tutorials - virtual Functions in English is available as part of our Learn to Program with C++: Beginner to Expert for Back-End Programming & C++ Programming Tutorials - virtual Functions in
Hindi for Learn to Program with C++: Beginner to Expert course. Download more important topics related with notes, lectures and mock test series for
Back-End Programming Exam by signing up for free.
Description
Video Lecture & Questions for C++ Programming Tutorials - virtual Functions Video Lecture | Learn to Program with C++: Beginner to Expert - Back-End Programming - Back-End Programming full syllabus preparation | Free video for Back-End Programming exam to prepare for Learn to Program with C++: Beginner to Expert.
Information about C++ Programming Tutorials - virtual Functions
Here you can find the meaning of C++ Programming Tutorials - virtual Functions defined & explained in the simplest way possible.
Besides explaining types of C++ Programming Tutorials - virtual Functions theory, EduRev gives you an ample number of questions to practice C++ Programming Tutorials - virtual Functions tests,
examples and also practice Back-End Programming tests.
|
73 videos|7 docs|23 tests
|
|
Explore Courses for Back-End Programming exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
Free
,video lectures
,C++ Programming Tutorials - virtual Functions Video Lecture | Learn to Program with C++: Beginner to Expert - Back-End Programming
,shortcuts and tricks
,study material
,Sample Paper
,ppt
,Exam
,C++ Programming Tutorials - virtual Functions Video Lecture | Learn to Program with C++: Beginner to Expert - Back-End Programming
,Objective type Questions
,mock tests for examination
,Semester Notes
,Extra Questions
,Summary
,Previous Year Questions with Solutions
,practice quizzes
,Important questions
,Viva Questions
,past year papers
,C++ Programming Tutorials - virtual Functions Video Lecture | Learn to Program with C++: Beginner to Expert - Back-End Programming
,MCQs
;
Study C++ Programming Tutorials - virtual Functions on the App
Students of Back-End Programming can study C++ Programming Tutorials - virtual Functions alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the C++ Programming Tutorials - virtual Functions,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of C++ Programming Tutorials - virtual Functions is prepared as per the latest Back-End Programming syllabus.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup