Functional Programming in C++

Functional programming in C++ emphasizes writing software by creating and combining pure functions—functions without side effects that always produce the same output for given inputs. It focuses on immutability, avoiding changing data states, and promotes higher-order functions, which take other functions as arguments. This approach can lead to clearer, more predictable, and easier-to-maintain code, especially for complex tasks. Though C++ is traditionally imperative, modern features like lambdas, std::function, and algorithms facilitate a functional style, enabling developers to write safer and more concise code by emphasizing expression over state and side effects.