Ada '83 Language Reference Manual

Copyright 1980, 1982, 1983 owned by the United States Government. Direct reproduction and usage requests to the Ada Information Clearinghouse.

2.7. Comments

A comment starts with two adjacent hyphens and extends up to the end of the line. A comment can appear on any line of a program. The presence or absence of comments has no influence on whether a program is legal or illegal. Furthermore, comments do not influence the effect of a program; their sole purpose is the enlightenment of the human reader.

Examples:

    --  the last sentence above echoes the Algol 68 report 

    end;  --  processing of LINE is complete 

    --  a long comment may be split onto
    --  two or more consecutive lines   

    ----------------  the first two hyphens start the comment  

Note:

Horizontal tabulation can be used in comments, after the double hyphen, and is equivalent to one or more spaces (see 2.2).

References: end of a line, illegal, legal, space character.

Rationale references: 2.1 Lexical Structure

Style Guide references: 2.1.4 Alignment of Declarations, 2.1.7 Pagination, 3.3 Comments, 5.2.1 Formal Parameters, 5.6.7 Goto Statements, 5.6.8 Return Statements, 7.1.3 Comments, 7.1.5 Encapsulating Implementation Dependencies, 7.2.5 Comments, 8.3.5 Iterators

Address any questions or comments to adainfo@sw-eng.falls-church.va.us.