C++ Interview: 200 Questions and Answers

The book "C++ Interview: 200 Questions and Answers" is a practical guide for developers preparing for technical interviews at IT companies of various levels. The author, Alexey Smirnov, a senior developer with ten years of experience, has collected and structured the most frequently asked questions in C++ interviews.

The material is divided into logical blocks covering key areas of the language:

• C++ basics: data types, control structures, functions, pointers, and references.
• Object-oriented programming: classes, inheritance, polymorphism, virtual functions.
• Standard Template Library (STL): containers, iterators, algorithms, function objects.
• Memory management: new/delete, smart pointers, RAII, leaks, and garbage collection.
• Templates: specialization, variadic templates, SFINAE, concepts.
• Multithreading and synchronization: threads, mutexes, condition_variable, atomic operations.
• Advanced topics: move semantics, rvalue references, exceptions, performance.

Each question is accompanied by a detailed breakdown: from a brief definition to an extended explanation with code examples. Special attention is given to typical mistakes and pitfalls that may arise during an interview.

Who this book is for:

• Junior and middle developers preparing for a job change or promotion.
• Technical students studying C++ in depth.
• Team leads who want to systematize their knowledge before an interview.

What you will learn:

• How to answer questions about the difference between pointers and references, stack and heap.
• How to explain the operation of virtual functions and VMT tables.
• How to correctly choose STL containers for a specific task.
• How to implement thread-safe code without deadlocks.
• How to optimize performance using move semantics.

The book is written in a lively style, without excessive academicism. The author shares real cases from his practice and gives advice on how to impress an interviewer. After reading, you will feel confident in a C++ interview and be able to argue convincingly on the most tricky questions.

This is not a reference book — it is a brain trainer. It is recommended to read sequentially, but it can also be used as a cheat sheet before an important meeting.