thealgorithms/c-plus-plus

TheAlgorithms/C-Plus-Plus is an open-source educational repository containing C++ implementations of a wide range of algorithms from computer science, mathematics, statistics, machine learning, data structures, and physics. It is part of the broader TheAlgorithms organization, which maintains similar collections in many other programming languages. The purpose is purely educational: each file demonstrates how a specific algorithm works, written clearly with documentation explaining the logic. Topics covered include sorting and searching algorithms (like quicksort, binary search), data structures (trees, graphs, queues), mathematical computations (prime numbers, modular arithmetic), machine learning basics (neural networks, k-means clustering), graph algorithms, string matching, dynamic programming, and many more. Rather than providing a library you would import into a production project, this is a reference collection for students, educators, and self-learners who want to see how algorithms are implemented in a real language. Each source file is self-contained, it uses only the C++ standard library with no external dependencies, so you can compile and run any single file independently without a complex build setup. The code follows the C++17 standard, which means it is compatible with modern compilers on Windows, macOS, and Linux as well as embedded systems. You would use this repository when studying algorithms as part of a computer science course or competitive programming practice, when you want a clean reference implementation to understand how something works, or when you are learning C++ and want well-documented examples of real algorithms. The tech stack is C++17, compiled with standard compilers (GCC, Clang, MSVC). No frameworks or external libraries are required. Documentation is generated automatically using Doxygen.