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To start the full description of the C language, we explain the lexical syntax and lexical units of C code. The lexical units of a programming language are known as tokens. This chapter covers all the tokens of C except for constants, which are covered in a later chapter (see Constants). One vital kind of token is the identifier (see Identifiers), which is used for names of any kind.
| • English | Write programs in English! | |
| • Characters | The characters allowed in C programs. | |
| • Whitespace | The particulars of whitespace characters. | |
| • Comments | How to include comments in C code. | |
| • Identifiers | How to form identifiers (names). | |
| • Operators/Punctuation | Characters used as operators or punctuation. | |
| • Line Continuation | Splitting one line into multiple lines. |