CXX is a programming language that extends the capabilities of the C programming language by adding features from C++. It is designed to support object-oriented programming, allowing developers to create reusable code through classes and objects. This makes it easier to manage complex software projects and enhances code organization. CXX is often used in various applications, including system software, game development, and embedded systems. Its compatibility with existing C code allows developers to integrate new features without completely rewriting their programs. This flexibility makes CXX a popular choice among software engineers and developers in the tech industry.