JOIN ME
-----
KZfaq 🎬 / @cppnuts
Patreon 🚀 / cppnuts
COMPLETE PLAYLIST
------------
C++ Tutorial For Beginners: • Introduction To C++
STL (Standard Template Library): • STL In C++
ThreadIng In C++: • Multithreading In C++
Data Structures: • Data Structure
Algorithms: • Binary Search
Design Patterns: • Factory Design Pattern...
Smart Pointers: • Smart Pointer In C++
C++14: • Digit Separator In C++
C++17: • std string_view in C++...
C++ All Type Casts: • static_cast In C++
INTERVIEW PLAYLIST
------------
C++ Interview Q&A: • Structural Padding & P...
C++ Interview Q&A For Experienced: • How delete[] Knows How...
Linked List Interview Questions: • Find Kth Node From Bac...
BST Interview Questions: • Search Element In Bina...
Array Interview Questions: • Reverse An Array
String Interview Questions: • Check String Is Palind...
Bit Manipulation Questions: • Find Set Bit In Intege...
Binary Tree Interview Question: • Invert Binary Tree
Sorting Algorithms: • Bubble Sort
C++ MCQ: • Video
C MCQ: • What printf returns af...
C Interview Questions: • Designated Initializat...
QUICK SHORT VIDEOS
-------------
C++ Short : • C++ Short Videos
C Short : • Shorts C Programming MCQ
Pure Virtual Function
SYNTAX: virtual returntype functionname(parameters...) = 0;
NOTES:
0. If some class can have only signature of function but not the body then we use pure virtual functions.
1. Sometimes in Base class we know the function name but not the definition of the function, so we want Derived classes to provide the definition of the function.
2. We can actually give body of pure virtual function.
3. If you have pure virtual function in your class, it means that class is an Abstract class and you can't create an object of that class. (But pointers and Reference can be created)
USE CASE:
1. Used to create abstract classes, which helps in creating interfaces (APIs)
#cpp #virtualfunction #programming #coding #softwareengineering