"In C" is a programming language that was developed in the early 1970s by Dennis Ritchie at Bell Labs. It is widely used for system programming and developing applications due to its efficiency and control over system resources. The language is known for its simplicity and flexibility, making it a popular choice for both beginners and experienced programmers. The syntax of "In C" is structured and resembles that of other programming languages, which helps in learning and transitioning to other languages. It supports various programming paradigms, including procedural programming, and provides features like functions, data types, and control structures, allowing developers to write clear and organized code.