String Byte Length: Difference between revisions
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trust md] [http://pegasik.ifrance.com/html/www-rossocorsa/ www rossocorsa com] [http://stasiia.ifrance.com/img/styles/yo-se/ yo se que es mentira] [http://stasiia.ifrance.com/img/styles/comune-di/ comune di roana] [http://lady-mosquito.ifrance.com/web/fabbrica-cioccolato/ fabbrica cioccolato] [http://bagrec.ifrance.com/lib/universita-padova.htm universita padova] [http://gmkamm.ifrance.com/view/new/giornata-mondiale.htm giornata mondiale della menopausa] [http://butanexlove.ifrance.com/lib/jvc-everio.htm jvc everio gz mc200ex] [http://me4tateljnitsa.ifrance.com/data/splash-/ splash una sirena a manhattan] {{Template:split-review}} |
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char *p = (char *) string; |
char *p = (char *) string; |
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while (*p |
while (*p != '\0') length ; |
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return 0; |
return 0; |
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} |
} |
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==[[C plus plus|C |
==[[C plus plus|C ]]== |
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[[Category:C plus plus|C |
[[Category:C plus plus|C ]] |
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'''Standard:''' [[ISO C plus plus|ISO C |
'''Standard:''' [[ISO C plus plus|ISO C ]] (AKA [[C plus plus 98|C 98]]): |
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'''Compiler:''' g |
'''Compiler:''' g 4.0.2 |
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#include <string> // note: '''not''' <string.h> |
#include <string> // note: '''not''' <string.h> |
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'''Platform:''' [[.NET]] |
'''Platform:''' [[.NET]] |
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'''Language Version:''' 1.0 |
'''Language Version:''' 1.0 |
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string s = "Hello, world!"; |
string s = "Hello, world!"; |
Revision as of 00:17, 29 August 2007
offerta natale sweet bitter simphony www benxua com perversioni femminili new humanism jewel maya elkhart www mans edu eg me pones sexi upper river rex fi 22 fa eros ramazotti testi canzoni nokia 6170 auricolare monopattino elettrico hotel villa svizzera copertina dvd prefisso telefoni cartuccia toner fotocopiatrice la giungla del peccato copertina film nel blu dipinto licenza studenti italiandreams the allamerican rejects aspirapolvere black prairie wind temi argomentativi catalogo giochi online otto in fuga testi distillers coral fang citta di lecce exhibition strike hotel in zagreb passafilo poesie sui sposi af 85mm f 1 8 istituti ortopedici rizzoli bologna bmw x5 novemberain ascelle pelose gratis acer server 1u legge 401 fotos de stars gigabyte 775 volkswagen passat ii hotel della havana a cuba xp upg borgato beta alarm acer n10 teatro comunale di piacenza un video per evil genius tariffa flat tv auto centro commerciale il sapore di un bacio creative audigy 2 indian sexy play italian celebrities faker eternity summer drunk teen regione di nocera superiore motorola d 550 cardiofrequenzimetro polso michele viet video adidas 45 pantigliate mobile asse da stiro caricaturas pornos what the world turismo danimarca navigatori michelin stunts gay attivi la gang che non sapeva sparare lavori italiani midi file karaoke spagna ristorante poesie il postino pablo neruda marsano sterilizzatori per neonati rio grande hdd 2 5 80gb lo studio dell istinto goniometria sesso hot pablo montero canciones mp3 para bajar liar bugiardo metal gear psp ragazzo lione stadium lampada benq hotel roccaraso malattia paget inculate transex www fasola com popolo po fire ball lettore mp3 con radio philips sony handycam dcr dvd 202 e elenco telefonico della provincia di cas disgni scarpe break biliard ati sapphire 9600 xt televisori lcd 37 pollici epson lq 2180 i love you baby sapphire 9550 se 128 mb palmari navigazione lartiglio scomparso roby e amy media player 10 pulsado trxhg albergo udine kodex 2 proces debo el cigala odiame cristian castro principato di monaco dork tower lyr brown charles brockden tirol havana delirio noleggio lungo termine golf lavoro salento xantia break luigi tenco ho capito che ti amo disco samba tracy chapman video handset manager panasonic gd spiami dragostea din porche sporche vogue sfilate uomo 2005 cattura renato western digital caviar 200gb centorbi traduzione maroon5 trabattello recagni culle picci ginluca grignani oroscopo amore pearcing sessuali imbroglio je linex videoregistratore lp brytney spears nuda merrell ventilator canzone telefilm roswell lassassino sdram sodimm pc133 smaltitori acrobat 5 iguana tango ninetto davoli passarge siegfried hogan calzature donna stampante cartuccia ricaricabili grd jvc johnny cash the man his world his music mondeo ghia v6 peg perego navy 4 schede video ati sapphire vivo www macbeth it rifles titoli tesi fisioterapia pagine sexy amatoriali tuffi i piscina wolf s rain mind plugins video anpa nomi giapponesi per tatuaggi kristeva samurai fredly elisa almeno tu nell universo ji ji ji trav idra (isola) calabozo test to test hifi portatile nuova 147 distinctive umberto tozzi canzoni konica e50 alfa corse dvbt decoder gioco cellulare gratis www nobelbiocare com gorle 2000 trust md www rossocorsa com yo se que es mentira comune di roana fabbrica cioccolato universita padova giornata mondiale della menopausa jvc everio gz mc200ex splash una sirena a manhattan
![Task](http://static.miraheze.org/rosettacodewiki/thumb/b/ba/Rcode-button-task-crushed.png/64px-Rcode-button-task-crushed.png)
You are encouraged to solve this task according to the task description, using any language you may know.
In this task, the goal is to find the byte length of a string. This means encodings like UTF-8 may need to be handled specially, as there is not necessarily a one-to-one relationship between bytes and characters, and some languages recognize this.
For character length, see String Character Length.
4D
$length:=Length("Hello, world!")
ActionScript
myStrVar.length()
Ada
Compiler: GCC 4.1.2
Str : String := "Hello World"; Length : constant Natural := Str'Length;
AppleScript
count of "Hello World"
AWK
From within any code block:
w=length("Hello, world!") # static string example x=length("Hello," s " world!") # dynamic string example y=length($1) # input field example z=length(s) # variable name example
Ad hoc program from command line:
echo "Hello, world!" | awk '{print length($0)}'
From executable script: (prints for every line arriving on stdin)
#!/usr/bin/awk -f {print"The length of this line is "length($0)}
C
Compiler: GCC 3.3.3
#include <string.h> int main(void) { const char *string = "Hello, world!"; size_t length = strlen(string); return 0; }
or by hand:
int main(void) { const char *string = "Hello, world!"; size_t length = 0; char *p = (char *) string; while (*p != '\0') length ; return 0; }
or (for arrays of char only)
#include <stdlib.h> int main(void) { char const s[] = "Hello, world!"; size_t length = sizeof s - 1; return 0; }
C
Compiler: g 4.0.2
#include <string> // note: not <string.h> int main() { std::string s = "Hello, world!"; std::string::size_type length = s.length(); // option 1: In Characters/Bytes std::string::size_type size = s.size(); // option 2: In Characters/Bytes // In bytes same as above since sizeof(char) == 1 std::string::size_type bytes = s.length() * sizeof(std::string::value_type); }
For wide character strings:
#include <string> int main() { std::wstring s = L"\u304A\u306F\u3088\u3046"; std::wstring::size_type length = s.length() * sizeof(std::wstring::value_type); // in bytes }
C#
Platform: .NET Language Version: 1.0
string s = "Hello, world!"; int clength = s.Length; // In characters int blength = System.Text.Encoding.GetBytes(s).length; // In Bytes.
Clean
Clean Strings are unboxed arrays of characters. Characters are always a single byte. The function size returns the number of elements in an array.
import StdEnv strlen :: String -> Int strlen string = size string Start = strlen "Hello, world!"
ColdFusion
#len("Hello World")#
Common Lisp
(length "Hello World")
Component Pascal
LEN("Hello, World!")
Forth
Interpreter: ANS Forth
Strings in Forth come in two forms, neither of which are the null-terminated form commonly used in the C standard library.
Counted string
A counted string is a single pointer to a short string in memory. The string's first byte is the count of the number of characters in the string. This is how symbols are stored in a Forth dictionary.
CREATE s ," Hello world" \ create string "s" s C@ ( -- length=11 )
Stack string
A string on the stack is represented by a pair of cells: the address of the string data and the length of the string data (in characters). The word COUNT converts a counted string into a stack string. The STRING utility wordset of ANS Forth works on these addr-len pairs. This representation has the advantages of not requiring null-termination, easy representation of substrings, and not being limited to 255 characters.
S" string" ( addr len) DUP . \ 6
Haskell
Compiler: GHC 6.6
strlen = length "Hello, world!"
IDL
Compiler: any IDL compiler should do
length = strlen("Hello, world!")
Java
Java encodes strings in UTF-16, which represents each character with one or two 16-bit values. The length method of String objects returns the number of 16-bit values used to encode a string, so the number of bytes can be determined by doubling that number.
String s = "Hello, world!"; int byteCount = s.length() * 2;
An other way to know the byte length of a string is to explicitly specify the charset we desire.
String s = "Hello, world!"; int byteCountUTF16 = s.getByte("UTF-16").length; int byteCountUTF8 = s.getByte("UTF-8").length;
JavaScript
JavaScript encodes strings in UTF-16, which represents each character with one or two 16-bit values. The length property of string objects gives the number of 16-bit values used to encode a string, so the number of bytes can be determined by doubling that number.
var s = "Hello, world!"; var byteCount = s.length * 2; //26
JudoScript
//Store length of hello world in length and print it . length = "Hello World".length();
Lua
Interpreter: Lua 5.0 or later.
string="Hello world" length=#string
mIRC Scripting Language
Interpreter: mIRC
alias stringlength { echo -a Your Name is: $len($$?="Whats your name") letters long! }
OCaml
Interpreter/Compiler: Ocaml 3.09
String.length "Hello world";;
Perl
Interpreter: perl 5.8
Strings in Perl consist of characters. Measuring the byte length therefore requires conversion to some binary representation (called encoding, both noun and verb).
use utf8; # so we can use literal characters like ☺ in source use Encode qw(encode); print length encode 'UTF-8', "Hello, world! ☺"; # 17. The last character takes 3 bytes, the others 1 byte each. print length encode 'UTF-16', "Hello, world! ☺"; # 32. 2 bytes for the BOM, then 15 byte pairs for each character.
PHP
$length = strlen('Hello, world!');
PL/SQL
DECLARE string VARCHAR2( 50 ) := 'Hello, world!'; stringlength NUMBER; BEGIN stringlength := length( string ); END;
Pop11
Currently Pop11 supports only strings consisting of 1-byte units. Strings can carry arbitrary binary data, so user can for example use UTF-8 (however builtin procedures will treat each byte as a single character). The length function for strings returns length in bytes:
lvars str = 'Hello, world!'; lvars len = length(str);
Python
Interpreter: Python 2.4
length = len("The length of this string will be determined")
Ruby
string="Hello world" print string.length
or
puts "Hello World".length
Scheme
(string-length "Hello world")
Smalltalk
string := 'Hello, world!". string size.
Standard ML
Interpreter: SML/NJ 110.60, Moscow ML 2.01 (January 2004)
Compiler: MLton 20061107
val strlen = size "Hello, world!";
Tcl
Basic version:
string bytelength "Hello, world!"
or more elaborately, needs Interpreter any 8.X. Tested on 8.4.12.
fconfigure stdout -encoding utf-8; #So that Unicode string will print correctly set s1 "hello, world" set s2 "\u304A\u306F\u3088\u3046" puts [format "length of \"%s\" in bytes is %d" $s1 [string bytelength $s1]] puts [format "length of \"%s\" in bytes is %d" $s2 [string bytelength $s2]]
Toka
This will include the terminating 0 in the length.
" hello, world!" count
UNIX Shell
With external utilities:
Interpreter: any bourne shell
string='Hello, world!' length=`echo -n "$string" | wc -c | tr -dc '0-9'` echo $length # if you want it printed to the terminal
With SUSv3 parameter expansion modifier:
Interpreter: Almquist SHell (NetBSD 3.0), Bourne Again SHell 3.2, Korn SHell (5.2.14 99/07/13.2), Z SHell
string='Hello, world!' length="${#string}" echo $length # if you want it printed to the terminal
VBScript
LenB(string|varname)
Returns the number of bytes required to store a string in memory Returns null if string|varname is null
xTalk
Interpreter: HyperCard
put the length of "Hello World"
or
put the number of characters in "Hello World"
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