C++ Common Interview Questions

What are some common interview questions for C++ developers?

Some common C++ interview questions include:

1. What is the difference between C++ and C?
2. Explain the concept of pointers and references.
3. What are the different types of constructors in C++?
4. Can you explain polymorphism in C++?

Can you explain polymorphism?

Polymorphism in C++ allows methods to do different things based on the object it is acting upon. It can be achieved through function overloading and operator overloading, as well as through inheritance and virtual functions.

What is the difference between a pointer and a reference?

A pointer is a variable that holds the memory address of another variable, while a reference is an alias for another variable. References cannot be null and must be initialized when declared, whereas pointers can be reassigned and can point to null.

What are the different types of constructors?

There are three main types of constructors in C++: default constructors (no parameters), parameterized constructors (with parameters), and copy constructors (used to create a new object as a copy of an existing object).