各种编程语言的注释符

Ada, Eiffel, Euphoria, Occam, SPARK, ANSI SQL, ToolBook OpenScript, and VHDL

-- InlineComment

ALGOL 60

comment BlockComment;

ALGOL 68

¢ BlockComment ¢comment BlockComment commentco BlockComment co# BlockComment #£ BlockComment £

AppleScript

-- InlineComment

(* BlockComment *)

Assembly language (varies)

; InlineComment   one example (most assembly languages use line comments only)

AutoHotkey

; InlineComment

/* BlockComment */

AWK, Bash, Bourne shell, C shell, Maple, Python, R, Tcl, and Windows PowerShell

# InlineComment

<# BlockComment #>

BASIC (various dialects):

'InlineComment (not all dialects)REM InlineComment

C (K&R, ANSI/C89/C90), CHILL, PL/I, and REXX

/* BlockComment */

C (C99), C++, Go, and JavaScript

// InlineComment

/* BlockComment */

C#

// InlineComment/// InlineComment (XML documentation comment)

/* BlockComment *//** BlockComment */ (XML documentation comment)

Cobol

InlineComment (when * is in column 7)

Curl

|| InlineComment

|# BlockComment #||foo# BlockComment #|

Cobra

# InlineComment

/# BlockComment #/ (nestable)

D

// InlineComment/// Documentation InlineComment (ddoc comments)

/* BlockComment *//** Documentation BlockComment */ (ddoc comments)/+ BlockComment +/ (nestable)/++ Documentation BlockComment +/ (nestable, ddoc comments)

DCL

$! InlineComment

ECMAScript (JavaScript, ActionScript, etc.)

// InlineComment

/* BlockComment */

Forth

\ InlineComment

( BlockComment ) (single line only)( before -- after ) stack comment convention

FORTRAN 66/77

C InlineComment (the letter 'C' in the first column makes the entire line a comment).

Fortran 90

! InlineComment (all characters on the line, from the exclamation mark onwards, are comments)

Haskell

-- InlineComment

{- BlockComment -}

Java

// InlineComment

/* BlockComment *//** BlockComment */ (Javadoc documentation comment)

Lisp and Scheme

; InlineComment

#| BlockComment |#

Lua

-- InlineComment

--[==[ BlockComment]==] (variable number of = signs)

Maple

# InlineComment

(* BlockComment *)

Mathematica

% (* BlockComment *)

Matlab

% InlineComment

%{BlockComment (nestable)%}Note: Both percent–bracket symbols must be the only non-whitespace characters on their respective lines.

Object Pascal (Delphi)

// InlineComment

(* BlockComment *){ BlockComment }

OCaml

(* BlockComment (* nestable *) *)

Pascal, Modula-2, Modula-3, Oberon, and ML:

(* BlockComment *) (OCaml comments are nestable)

Perl and Ruby

# InlineComment

=beginBlockComment=cut (POD documentation comment)__END__Comments after end of code

PHP

# InlineComment// InlineComment

/* BlockComment *//** Documentation BlockComment */ (PHP Doc comments)

PILOT

R:InlineComment

PL/SQL and TSQL

-- InlineComment

/* BlockComment */

REALbasic

' InlineComment// InlineCommentrem InlineComment

SAS

* BlockComment;/* BlockComment */

Seed7

# InlineComment

(* BlockComment *)

Simula

comment BlockComment;! BlockComment;

Smalltalk

"BlockComment"

Smarty

{* BlockComment *}

Standard ML

(* BlockComment *)

TeX, LaTeX, PostScript, Erlang, and S-Lang

% InlineComment

Texinfo

@c InlineComment@comment InlineComment

TUTOR

* InlineCommentcommand $$ InlineComment

Visual Basic

' InlineCommentRem InlineComment

Visual Basic .NET

' InlineComment''' InlineComment (XML documentation comment)Rem InlineComment

Visual Prolog

% InlineComment

/* BlockComment */