C (programming language)
The C programming language is a computer programming language developed in the early 1970s by Ken Thompson and Dennis Ritchie at Bell Labs.   They used it to improve the UNIX operating system.  It is still much used today.  C is a procedural language, which means that people write their programs as a series of step-by-step instructions.  C is a compiled language, which means that the computer source code, written in C, is converted to make some machine code that a computer chip can actually execute.