C++ Interview Questions and Answers(2022)
- Define C++?
- What is the difference between C and C++?
- What is a class in C++?
- What is an object in c++?
- Why use access modifiers in C++?
- What are C++ access modifiers?
- What are the differences between a class and a structure in C++?
- Why is the size of an empty class not zero in C++?
- What is a constructor in c++?
- Is the default constructor exists in C++?
- What are the various OOPs concepts in C++?
- What is polymorphism in C++?
- What are the different types of polymorphism in C++?
- Compare compile-time polymorphism and Run-time polymorphism in c++?
- What is encapsulation in c++?
- What Is Inheritance in c++?
- What is an abstraction in C++?
- What is a reference in C++?
- What is the default constructor in c++?
- What is a destructor in C++?
- When is the destructor called in c++?
- Is it possible to overload the destructor of the class in c++?
- Should I explicitly call a destructor on a local variable in c++?
- How destructors are different from a normal member function in c++
- What is the difference between constructor and destructor in c++?
- What is “this” pointer in c++?
- Where we should use this pointer in C++?
- What is a “new” keyword in C++?
- What is the difference between new and malloc in c++?
- What is the difference between delete and free in c++?
- What do you mean by call by value and call by reference in c++?
- What is a namespace in c++?
- How to use namespace in C++?
- What is a member function in C++?
- What are static members in C++?
- What do you mean by inline function and How to implement the inline function in C++?
- What is the use of the inline function in C++?
- What is the advantage and disadvantage of the inline function?
- What’s the difference between static, inline, and void with functions?
- What is function overloading in C++?
- Explain some ways of doing function overloading in C++?
- What is operator overloading?
- What is the difference between function overloading and Operator Overloading?
- What is the assignment operator in C++?
- Can you overload a function based only on whether a parameter is a value or a reference in c++?
- What is Overriding in c++?
- Write a C++ program that describes function Overriding?
- What is the difference between function overloading and Overriding in c++?
- How to create and use a reference variable in C++?
- What is the difference between a pointer and a reference in c++?
- What is the virtual function?
- Write some important rules associated with virtual functions?
- Name the Operators that cannot be Overloaded in c++
- Figure out functions that cannot be overloaded in C++?
C++ programming
Answer:
The word polymorphism is a Greek word that means “many-form“. So polymorphism in C++ means, the same entity (method or object) behaves differently in different scenarios. Let’s consider a real-life example of polymorphism. A man behaves like an employee in the office, a father, husband, or son in a home, and a customer in a market. So the same man possesses different behavior in different situations. This is called polymorphism. We can categorize polymorphism into two types. These are Compile-time polymorphism and Run-time polymorphism.
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