What are some common C++ interview questions?

What are some common C++ interview questions I should prepare for?

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. How does inheritance work in C++?
5. Can you explain polymorphism with an example?

Can you explain polymorphism in more detail?

Polymorphism in C++ allows methods to do different things based on the object it is acting upon. There are two types:

1. Compile-time polymorphism (method overloading and operator overloading).
2. Run-time polymorphism (using virtual functions). For example, if you have a base class 'Shape' and derived classes 'Circle' and 'Square', you can call a method 'draw()' on a 'Shape' pointer that points to either a 'Circle' or 'Square' object, and the correct 'draw()' method will be executed.

What is the difference between a pointer and a reference?

A pointer is a variable that holds the memory address of another variable, and it can be reassigned to point to different variables. A reference, on the other hand, is an alias for another variable and cannot be changed to refer to a different variable after it is initialized.

What are some good resources to study C++ for interviews?

Some good resources include:

1. "C++ Primer" by Stanley B. Lippman
2. "Effective C++" by Scott Meyers
3. Online platforms like LeetCode and HackerRank for practice problems.
4. C++ documentation and tutorials on websites like GeeksforGeeks and Codecademy.