Best modern c++ interview questions

C++ is a powerful and widely used programming language that has evolved over the years. With the introduction of C++11, C++14, and C++17, there are new features and improvements that developers need to be aware of. If you are preparing for a C++ job interview, it is important to be familiar with these modern C++ concepts and be able to answer related questions confidently.

In this article, we will provide you with a list of modern C++ interview questions that can help you prepare for your next interview. These questions cover a wide range of topics, including C++11/14/17 features, memory management, object-oriented programming, templates, and more. By reviewing and practicing these questions, you will be better equipped to demonstrate your knowledge and skills in modern C++ programming.

See these modern C++ interview questions

1. What are the new features introduced in C++11?
2. What is the difference between auto and decltype(auto) in C++?
3. Explain the concept of move semantics in C++.
4. What is the purpose of constexpr in C++11?
5. What are variadic templates in C++?
6. What is the difference between std::vector and std::array?
7. Explain the concept of perfect forwarding in C++.
8. What is the purpose of noexcept in C++?
9. What are lambda expressions in C++?
10. What is the difference between std::unique_ptr and std::shared_ptr?
11. Explain the concept of RAII (Resource Acquisition Is Initialization) in C++.
12. What is the purpose of std::move in C++?
13. What are the advantages of using smart pointers in C++?
14. What is the difference between std::function and function pointers in C++?
15. Explain the concept of type deduction in C++.
16. What is the purpose of noexcept specifier in function declarations?
17. What is the difference between std::bind and lambda expressions in C++?
18. Explain the concept of range-based for loop in C++.
19. What are the new features introduced in C++14?
20. What is the purpose of std::tuple in C++?
21. What is the difference between std::make_shared and std::make_unique?
22. Explain the concept of constexpr functions in C++.
23. What are the new features introduced in C++17?
24. What is the purpose of std::optional in C++?
25. What is the difference between std::vector and std::deque?
26. Explain the concept of copy elision in C++.
27. What are user-defined literals in C++?
28. What is the purpose of std::variant in C++?
29. What is the difference between std::set and std::unordered_set?
30. Explain the concept of structured bindings in C++.
31. What are constexpr lambdas in C++?
32. What is the purpose of std::transform in C++?
33. What is the difference between std::map and std::unordered_map?
34. Explain the concept of if constexpr in C++.
35. What are noexcept move constructors and noexcept move assignment operators in C++?
36. What is the purpose of std::any in C++?
37. What is the difference between std::list and std::vector?
38. Explain the concept of fold expressions in C++.
39. What are the new features introduced in C++20?
40. What is the purpose of std::format in C++?
41. What is the difference between std::array and C-style arrays?
42. Explain the concept of spaceship operator in C++.
43. What are concepts in C++?

By familiarizing yourself with these modern C++ interview questions and their answers, you will be well-prepared to tackle any C++ job interview. Remember to not only memorize the answers but also understand the underlying concepts. Good luck!