Comment (computer programming): Difference between revisions

Revision as of 14:23, 11 January 2025

Revision as of 14:27, 11 January 2025

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===Curly brace languages===

Many of the [[curly brace language]]s such as C, C++ and their many derivatives delimit a line comment with {{code|//}} and a block comment with {{code|/*}} and {{code|*/}}. Originally, C lacked the line comment, but it was added in [[C99]]. Notable languages include: C, C++, [[C# (programming language)|C#]], [[D (programming language)|D]], [[Java (programming language)|Java]], [[Javascript]] and [[Swift (programming language)|Swift]]. For example:

<syntaxhighlight lang="c">

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/* This is the nested comment. */

This is the end of the outer comment. */

</syntaxhighlight>

====Nested block in D====

D uses C++-style comments with additional syntax for nestable blocks delimited by <code>/+</code> and <code>+/</code>.

<syntaxhighlight lang="d">

// line comment +/

/*

block comment

*/

/+ start of outer block

/+ nestedinner block +/

end of outer block +/

</syntaxhighlight>

Line 599 ⟶ 612:

Hello World<br />

</cfoutput>

</syntaxhighlight>

====D====

[[D (programming language)|D]] uses C++-style comments, as well as nestable D-style multiline comments, which start with '/+' and end with '+/'.

<syntaxhighlight lang="d">

// This is a single-line comment.

/* This is a multiline comment.

*/

/+ This is a

/+ nested +/

comment +/

</syntaxhighlight>