;stroke-width:0px;}%3c/style%3e%3clinearGradient%20id='b'%20x1='4.3'%20y1='22.8'%20x2='19.8'%20y2='2.3'%20gradientTransform='translate(0%2025.3)%20scale(1%20-1)'%20gradientUnits='userSpaceOnUse'%3e%3cstop%20offset='0'%20stop-color='%23f9e833'/%3e%3cstop%20offset='.4'%20stop-color='%23facb3a'/%3e%3cstop%20offset='1'%20stop-color='%23fbb140'/%3e%3c/linearGradient%3e%3c/defs%3e%3cpath%20class='c'%20d='m11.5,19.8c.3-.2.8-.2,1.1,0l5.5,2.9c1.2.6,1.9,0,1.7-1.2l-1-6.1c0-.3,0-.8.3-1l4.4-4.3c.9-.9.6-1.8-.7-2l-6.1-.9c-.3,0-.7-.3-.9-.6L13.1.9c-.6-1.2-1.5-1.2-2.1,0l-2.7,5.6c-.1.3-.5.6-.9.6l-6.1.9c-1.3.2-1.6,1.1-.7,2l4.4,4.3c.2.2.4.7.3,1l-1,6.1c-.2,1.3.5,1.9,1.7,1.2l5.5-2.9h0Z'/%3e%3c/svg%3e){kind=small}
1.
What are the main features of C++?
Answer:
C++ Basics and Language Features
- 2.
Explain the difference between C and C++.
Answer: - 3.
What is object-oriented programming in C++?
Answer: - 4.
What are the access specifiers in C++ and what do they do?
Answer: - 5.
Explain the concept of namespaces in C++.
Answer: - 6.
What is the difference between ‘struct’ and ‘class’ in C++?
Answer: - 7.
What is a constructor and what are its types in C++?
Answer: - 8.
Explain the concept of destructors in C++.
Answer: - 9.
What is function overloading in C++?
Answer: - 10.
What is operator overloading in C++?
Answer:
Memory Management and Pointers
- 11.
What is dynamic memory allocation in C++?
Answer: - 12.
Explain the difference between ‘new’ and ‘malloc()’.
Answer: - 13.
What is a memory leak and how can it be prevented?
Answer: - 14.
What is a dangling pointer?
Answer: - 15.
Explain the concept of smart pointers in C++.
Answer: - 16.
What is the difference between unique_ptr, shared_ptr, and weak_ptr?
Answer: - 17.
How does reference counting work in shared_ptr?
Answer: - 18.
What is the rule of three in C++?
Answer: - 19.
What is the rule of five in C++?
Answer: - 20.
Explain move semantics in C++.
Answer:
Object-Oriented Programming Concepts
- 21.
What is inheritance in C++? Explain its types.
Answer: - 22.
What is polymorphism and how is it implemented in C++?
Answer: - 23.
Explain the concept of virtual functions in C++.
Answer: - 24.
What is a pure virtual function?
Answer: - 25.
What is an abstract class in C++?
Answer: - 26.
Explain the diamond problem in multiple inheritance and how to solve it.
Answer: - 27.
What is function hiding in C++?
Answer: - 28.
Explain the concept of friend functions and classes.
Answer: - 29.
What is the difference between composition and inheritance?
Answer: - 30.
What is RAII (Resource Acquisition Is Initialization) in C++?
Answer:
Templates and Generic Programming
- 31.
What are templates in C++?
Answer: - 32.
Explain the difference between function templates and class templates.
Answer: - 33.
What is template specialization?
Answer: - 34.
How does template metaprogramming work in C++?
Answer: - 35.
What are variadic templates?
Answer: - 36.
Explain the concept of type traits in C++.
Answer: - 37.
What is SFINAE (Substitution Failure Is Not An Error)?
Answer: - 38.
How do you implement a type-safe container using templates?
Answer: - 39.
What are the advantages and disadvantages of using templates?
Answer: - 40.
Explain the concept of template argument deduction.
Answer:
Exception Handling
- 41.
What is exception handling in C++?
Answer: - 42.
Explain the try, catch, and throw keywords.
Answer: - 43.
What is the purpose of the ‘noexcept’ specifier?
Answer: - 44.
How do you create custom exception classes?
Answer: - 45.
What happens if an exception is not caught?
Answer: - 46.
Explain the concept of exception safety.
Answer: - 47.
What is the difference between synchronous and asynchronous exceptions?
Answer: - 48.
How do you handle constructor failures using exceptions?
Answer: - 49.
What is the purpose of std::exception and its derived classes?
Answer: - 50.
How do you implement a stack unwinding mechanism?
Answer:
Standard Template Library (STL)
- 51.
What is the Standard Template Library (STL)?
Answer: - 52.
Explain the difference between vector and list in STL.
Answer: - 53.
What are the associative containers in STL?
Answer: - 54.
How does an unordered_map work internally?
Answer: - 55.
What is the difference between set and multiset?
Answer: - 56.
Explain the concept of iterators in STL.
Answer: - 57.
What are function objects (functors) in STL?
Answer: - 58.
How do you use algorithms like sort, find, and binary_search in STL?
Answer: - 59.
What is the purpose of std::pair and std::tuple?
Answer: - 60.
Explain the concept of allocators in STL.
Answer:
Concurrency and Multithreading
- 61.
What is multithreading in C++?
Answer: - 62.
How do you create and manage threads using std::thread?
Answer: - 63.
Explain the concept of mutex and its types in C++.
Answer: - 64.
What is a deadlock and how can it be prevented?
Answer: - 65.
How do you use condition variables for thread synchronization?
Answer: - 66.
What is the purpose of std::atomic?
Answer: - 67.
Explain the difference between std::async and std::thread.
Answer: - 68.
What is a thread pool and how would you implement one?
Answer: - 69.
How do you handle race conditions in C++?
Answer: - 70.
Explain the concept of memory ordering in C++ concurrency.
Answer:
C++11 and Beyond Features
- 71.
What are lambda expressions in C++?
Answer: - 72.
Explain the ‘auto’ keyword and type inference.
Answer: - 73.
What is uniform initialization in C++11?
Answer: - 74.
How does range-based for loop work?
Answer: - 75.
What are delegating constructors?
Answer: - 76.
Explain the concept of rvalue references.
Answer: - 77.
What is perfect forwarding in C++?
Answer: - 78.
How do you use std::chrono for time-related operations?
Answer: - 79.
What are the improvements in smart pointers introduced in C++11?
Answer: - 80.
Explain the concept of constexpr.
Answer:
Advanced C++ Concepts
- 81.
What is CRTP (Curiously Recurring Template Pattern)?
Answer: - 82.
Explain the concept of type erasure in C++.
Answer: - 83.
What are fold expressions in C++17?
Answer: - 84.
How do you implement a singleton pattern in C++?
Answer: - 85.
What is the purpose of std::optional?
Answer: - 86.
Explain the concept of concepts in C++20.
Answer: - 87.
What are coroutines in C++20?
Answer: - 88.
How do you use std::variant and std::visit?
Answer: - 89.
What is the purpose of std::any?
Answer: - 90.
Explain the concept of modules in C++20.
Answer:
Performance and Optimization
- 91.
What is cache coherence and how does it affect C++ program performance?
Answer: - 92.
How do you optimize memory usage in C++ programs?
Answer: - 93.
Explain the concept of branch prediction and its impact on performance.
Answer: - 94.
What is loop unrolling and when is it beneficial?
Answer: - 95.
How do you profile C++ code for performance optimization?
Answer: - 96.
What is the difference between constexpr and inline functions in terms of performance?
Answer: - 97.
Explain the concept of false sharing and how to avoid it.
Answer: - 98.
How do you optimize code for modern CPU architectures (e.g., SIMD instructions)?
Answer: - 99.
What are some techniques for reducing compile times in large C++ projects?
Answer: - 100.
How do you implement and use lock-free data structures for better concurrency performance?
Answer:
%20--%3e%3csvg%20version='1.1'%20id='Слой_1'%20xmlns='http://www.w3.org/2000/svg'%20xmlns:xlink='http://www.w3.org/1999/xlink'%20x='0px'%20y='0px'%20viewBox='0%200%20101%20101'%20style='enable-background:new%200%200%20101%20101;'%20xml:space='preserve'%3e%3cstyle%20type='text/css'%3e%20.st0{fill:%23FFFFFF;}%20%3c/style%3e%3cpath%20class='st0'%20d='M80.1,90c0.7,0,1.2-0.6,1.2-1.4c0-0.8-0.5-1.4-1.2-1.4H14.8c-2.7,0-4.9-2.5-4.9-5.6V15.2c0-0.8-0.5-1.4-1.2-1.4%20c-0.7,0-1.2,0.6-1.2,1.4v66.3c0,4.7,3.3,8.5,7.3,8.5H80.1z'/%3e%3cpath%20class='st0'%20d='M91.6,11H66.1c-0.7,0-1.2,0.6-1.2,1.4c0,0.8,0.5,1.4,1.2,1.4h22.7L63,43.7l-20.7,1.7l-0.7,0.4L22.4,67.7%20c-0.5,0.4-0.6,1.4-0.2,2c0.4,0.6,1.2,0.7,1.7,0.3c0.1-0.1,0.1-0.1,0.2-0.3l18.6-21.4l20.7-1.7l0.7-0.4l26.2-30.2v26%20c0,0.8,0.5,1.4,1.2,1.4s1.2-0.6,1.2-1.4V12.4C92.8,11.6,92.3,11,91.6,11z'/%3e%3c/svg%3e){kind=small}
%20--%3e%3csvg%20version='1.1'%20id='Layer_1'%20xmlns='http://www.w3.org/2000/svg'%20xmlns:xlink='http://www.w3.org/1999/xlink'%20x='0px'%20y='0px'%20viewBox='0%200%2044.5%2044.5'%20style='enable-background:new%200%200%2044.5%2044.5;'%20xml:space='preserve'%3e%3cstyle%20type='text/css'%3e%20.st0{fill:none;stroke:%23202020;stroke-width:1.498;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:3.994;}%20.st1{fill:none;stroke:%23202020;stroke-width:1.498;stroke-linecap:round;stroke-miterlimit:10.005;}%20%3c/style%3e%3cpath%20class='st0'%20d='M11.4,28l11-11.5L33.1,28'/%3e%3ccircle%20class='st1'%20cx='22.2'%20cy='22.2'%20r='21.5'/%3e%3c/svg%3e){kind=small}