Source code for a C or C++ program; may include an entire program's source code, or may be one of may source files referenced within a programming project; can be edited using a basic text editor, but will not show syntax highlighting like most software development programs do.

C++ is the programming language used for creating many of today's software programs. Some Unix compilers use a lowercase ".c" extension for C and an upper case ".C" extension for C++, although this convention is not common.

Scripts created with lite-C also use the ".c" extension. They contain code written in the lite-C programming language and are compiled on-the-fly by the lite-C compiler.

Lite-C was developed by Conitec Datasystems in cooperation with Atari. It allows users to develop 2D and 3D applications without previous programming knowledge. Many functions, images, and sounds are included with lite-C, which allows for streamlined programming. This makes lite-C an ideal solution for creating casual games and for teaching programming concepts.