What is C++11?

C++11 is a version of the ISO/IEC 14882 standard for the C++ programming language. It replaced the prior version of the C++ standard, C++03, and was later replaced by C++14. C++11 introduced significant new features to the language, including lambda expressions, move semantics, improved template metaprogramming support, range-based for loops, and concurrency support (threads, mutexes, and atomic operations). It's commonly used in performance-critical applications, game development, operating systems, and large-scale software projects.