The C file extension is used by C/C++ programming language for source code file. C++ is the programming language used for creating most of today's software programs. C file can be viewed with any text editor.
The C file extension is associated with the Lite-C programming language based on C/C++ programming. The C file contains script and can be opened with any text editor. Lite-C is a programming language for multimedia applications and personal computer games, using a syntax subset of the C language with some elements of the C++ language.
The C file extension is associated with the Origin C, an easy-to-use data analysis and graphing software application. The C file stores program written in the Origin C.