View source for Escape sequences and escape characters

Escape characters (also called escape sequences or escape codes) are used to signal an alternative interpretation of a series of characters.  Most commonly, escape characters are used to solve the problem of using special characters inside a string declaration.  

For example, if you wanted String A to have the value:
 The question is, "to be or not to be"
You would need to use an escape character to keep the compiler from interpreting the " character as the end of the string:
 String A = "The question is \"to be or not to be\""


'''Source(s):'''  [http://downloadranking.com/support.php  escape characters]


==Implementations==
===VB===
Visual Basic (VB) escape characters:


'''Source(s):'''  [http://downloadranking.com/support.php  escape characters]


{|  border="1" cellpadding="2"
!width="100"|For this
!width="100"|Use this
!width="225"|Setting x to:
!width="225"|Printing x will yield:
|-
| "
| "" or Chr(34)
| "He said ""hi"""
"He said " & Chr(34) & "hi" & Chr(34)
| He said "hi"
|-
| [enter]
| vbCrLf
| "He said " & vbCrLf & "he would"
| He said<BR>he would
|}


'''Source(s):'''  [http://downloadranking.com/support.php  escape characters]


===C / C++===
C and C++ escape characters:

{|  border="1" cellpadding="2"
!width="100"|For this
!width="100"|Use this
!width="225"|Setting x to:
!width="225"|Printing x will yield:
|-
| '
| \'
| "Don\'t do that"
| Don't do that
|-
| "
| \"
| "She said \"hi\""
| She said "hi"
|-
|-
| ?
| \?
| "Who are you\?"
| Who are you?
|-
| \
| \\
| "Backslash: \\"
| Backslash: \
|-
| [newline]
| \n
| "1\n2"
| 1<br />2
|-
| [horizontal tab]
| \t
| "1\t2"
| 1     2
|-
| [backspace]
| \b
| "12\b3"
| 13
|-
| [16 bit unicode]
| \'''u'''xxxx
| "Katakana a: \u30A1"
| Katakana a: ァ
|-
| [32 bit unicode]
| \'''U'''xxxxxxxx
| "Katakana a: \U000030A1"
| Katakana a: ァ
|-
| [numeric escape sequence.]
| \'''x'''nn
| "Printing the ESC character: \x1Bzyxwu"
| "Printing the ESC character: yxwu"
|}


'''Source(s):'''  [http://downloadranking.com/support.php  escape characters]


===Delphi===
Delphi escape characters:

{|  border="1" cellpadding="2"
!width="100"|For this
!width="100"|Use this
!width="225"|Setting x to:
!width="225"|Printing x will yield:
|-
| '
| <nowiki>''</nowiki> 
| 'Don<nowiki>''</nowiki>t do that'
'''Remark:''' This is not a double quote, but two single quotes!
| Don't do that
|-
| [16 or 32-bit Unicode]
| #d or #$x
| 'First Line'#13#10'Second Line'
| First Line<br />Second Line
|}


'''Source(s):'''  [http://downloadranking.com/support.php  escape characters]


===Java===
Java escape characters:
====Single Characters====
{|  border="1" cellpadding="2"
!width="100"|For this
!width="100"|Use this
!width="225"|Setting x to:
!width="225"|Printing x will yield:
|-
| '
| \'
| "Don\'t do that"
| Don't do that
|-
| "
| \"
| "She said \"hi\""
| She said "hi"
|-
| \
| \\
| "Backslash: \\"
| Backslash: \
|-
| [newline]
| \n
| "1\n2"
| 1<br />2
|-
| [horizontal tab]
| \t
| "1\t2"
| 1     2
|-
| [backspace]
| \b
| "12\b3"
| 13
|-
| [16 bit unicode]
| \'''u'''xxxx
| "Katakana a: \u30A1"
| Katakana a: ァ
|-
| [32 bit unicode]
| \'''U'''xxxxxxxx
| "Katakana a: \u000030A1"
| Katakana a: ァ
|}


'''Source(s):'''  [http://downloadranking.com/support.php  escape characters]


====Unicode====
Unicode escape characters:
{|  border="1" cellpadding="2"
!width="100"|For this
!width="100"|Use this
!width="225"|Setting x to:
!width="225"|Printing x will yield:
|-
| '
| \u0027
| "Don\u0027t do that"
| Don't do that
|-
| "
| \u0022
| "She said \u0022hi\u0022"
| She said "hi"
|-
| \
| \u0008
| "Backslash: \u0008"
| Backslash: \
|-
| [newline]
| \u000a
| "1\u000a2"
| 1<br />2
|-
| [horizontal tab]
| \u0009
| "1\u00092"
| 1     2
|-
| [backspace]
| \u0008
| "12\u00083"
| 13
|}


'''Source(s):'''  [http://downloadranking.com/support.php  escape characters]


===PHP===
PHP escape characters:
====Single quoted strings====
{|  border="1" cellpadding="2"
!width="100"|For this
!width="100"|Use this
!width="225"|Setting x to:
!width="225"|Printing x will yield:
|-
| '
| \'
| 'Don\'t do that'
| Don't do that
|-
| \
| \\
| 'This is a backslash: \\'
'''Remark:''' Only necessary before a single quote or at the end of a string.
| This is a backslash: \
|}


'''Source(s):'''  [http://downloadranking.com/support.php  escape characters]


====Double quoted strings====
{|  border="1" cellpadding="2"
!width="100"|For this
!width="100"|Use this
!width="225"|Setting x to:
!width="225"|Printing x will yield:
|-
| "
| \"
| "She said \"hi\""
| She said "hi"
|-
| \
| \\
| "Backslash: \\"
| Backslash: \
|-
| $
| \$
| "100\$"
| 100$
|-
| [newline, LF, 0x0A]
| \n
| "1\n2"
| 1<br />2
|-
| [carriage return, CR, 0x0D]
| \r
| "1\r2"
| 2
|-
| [horizontal tab]
| \t
| "1\t2"
| 1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2
|}


'''Source(s):'''  [http://downloadranking.com/support.php  escape characters]


===Python===
Python escape characters:
{|  border="1" cellpadding="2"
!width="100"|For this
!width="100"|Use this
!width="225"|Setting x to:
!width="225"|Printing x will yield:
|-
| '
| \'
| 'Don\'t do that'
| Don't do that
|-
| "
| \"
| "She said \"hi\""
| She said "hi"
|-
| \
| \\
| "Backslash: \\"
| Backslash: \
|-
| [newline]
| \n
| "1\n2"
| 1<br />2
|-
| [carriage return]
| \r
| "1\r2"
| 2 overwrites the 1
|-
| [horizontal tab]
| \t
| "1\t2"
| 1     2
|-
| [backspace]
| \b
| "12\b3"
| 13
|-
| [16 bit unicode]
| \'''u'''xxxx
| "Katakana a: \u30A1"
| Katakana a: ァ
|-
| [32 bit unicode]
| \'''U'''xxxxxxxx
| "Katakana a: \u000030A1"
| Katakana a: ァ
|}


'''Source(s):'''  [http://downloadranking.com/support.php  escape characters]


===Seed7===
Seed7 escape characters:

{|  border="1" cellpadding="2"
!width="100"|For this
!width="100"|Use this
!width="225"|Setting x to:
!width="225"|Printing x will yield:
|-
| '
| \'
| "Don\'t do that"
| Don't do that
|-
| "
| \"
| "She said \"hi\""
| She said "hi"
|-
| \
| \\
| "Backslash: \\"
| Backslash: \
|-
| [newline]
| \n
| "1\n2"
| 1<br />2
|-
| [horizontal tab]
| \t
| "1\t2"
| 1     2
|-
| [backspace]
| \b
| "12\b3"
| 13
|-
| [16 bit unicode]
| \16#xxxx\
| "Katakana a: \16#30A1\"
| Katakana a: ァ
|-
| [32 bit unicode]
| \16#xxxxxxxx\
| "Katakana a: \16#000030A1\"
| Katakana a: ァ
|-
| [numeric escape sequence.]
| \nn\
| "Printing the ESC character: \27\zyxwu"
| "Printing the ESC character: yxwu"
|}


'''Source(s):'''  [http://downloadranking.com/support.php  escape characters]


===SQL===
SQL escape characters:
{|  border="1" cellpadding="2"
!width="100"|For this
!width="100"|Use this
!width="225"|Setting x to:
!width="225"|Printing x will yield:
|-
| '
| \'
| "Don\'t do that"
| Don't do that
|-
| "
| \"
| "She said \"hi\""
| She said "hi"
|-
| \
| \\
| "Backslash: \\"
| Backslash: \
|-
| [newline]
| \n
| "1\n2"
| 1<br />2
|}


'''Source(s):'''  [http://downloadranking.com/support.php  escape characters]


===URL===
URL escape characters:
{|  border="1" cellpadding="2"
!width="100"|For this
!width="100"|Use this
!width="225"|Setting x to:
!width="225"|Printing x will yield:
|-
|Space
|%20
|help%20me
|help me
|-
|%
|%25
|100%25%20pure
|100% pure
|-
|<
|%3C
|x%3Cy
|x<y
|-
|>
|%3E
|x%3Ey
|x>y
|-
|Ascii-Code
|%xx
|
|}


'''Source(s):'''  [http://downloadranking.com/support.php  escape characters]


===XML===
XML escape characters:
{|  border="1" cellpadding="2"
!width="100"|For this
!width="100"|Use this
!width="225"|Setting an element to:
!width="225"|will yield:
|-
| '
| &amp;apos;
| Don&amp;apos;t do that
| Don't do that
|-
| &quot;
| &amp;quot;
| She said &amp;quot;hi&amp;quot;
| She said "hi"
|-
| &amp;
| <nowiki>&amp;amp;</nowiki>
| H&amp;amp;M
| H&M
|-
| &lt;
| <nowiki>&amp;lt;</nowiki>
| a d is a &amp;lt;
| a d is a &lt;
|-
| &gt;
| <nowiki>&amp;gt;</nowiki>
| 5&amp;gt;6
| 5&gt;6
|-
| Unicode (hex)
| <nowiki>&amp;#xXXX;</nowiki>
| a d is a &amp;#x64;
| a d is a &#x64;
|-
| Unicode (dec)
| <nowiki>&amp;#123;</nowiki>
| sleeps like &amp;#90;
| sleeps like &#90;
|}


'''Source(s):'''  [http://downloadranking.com/support.php  escape characters]


===JSON===
{|  border="1" cellpadding="2"
!width="100"|For this
!width="100"|Use this
!width="225"|Setting an element to:
!width="225"|will yield:
|-
| '
| \'
| Don\'t do that
| Don't do that
|-
| "
| \"
| She said \"hi\"
| She said "hi"
|-
| \
| \\
| H\\M
| H\M
|-
| [Line Break]
| \n
| Line\nbreak.
| Line<br>break
|}


'''Source(s):'''  [http://downloadranking.com/support.php  escape characters]


[[Category:Syntax]]
[[Category:C]]
[[Category:C++]]
[[Category:Delphi]]
[[Category:Java]]
[[Category:JSON]]
[[Category:PHP]]
[[Category:Python]]
[[Category:Seed7]]
[[Category:SQL]]
[[Category:Visual Basic]]
[[Category:XML]]