Basic concepts

Basic concepts

This section provides definitions for the specific terminology and the concepts used when describing the C programming language.

A C program is a sequence of text files (typically header and source files) that contain declarations. They undergo translation to become an executable program, which is executed when the OS calls its main function (unless it is itself the OS or another freestanding program, in which case the entry point is implementation-defined).

Certain words in a C program have special meaning, they are keywords. Other