String Character Length

cheap rivotril kyocera ringtones cheap cialis ultracet online levitra free kyocera ringtones free music ringtones free free ringtones free verizon ringtones cheap soma cheap ortho wellbutrin online cheap tenuate free real ringtones nextel ringtones order paxil free motorola ringtones xanax online cheap lipitor free punk ringtones sony ericsson ringtones cool ringtones free sonyericsson ringtones free mtv ringtones cheap albuterol polyphonic ringtones order lisinopril free tracfone ringtones prozac online cheap ambien clonazepam online zanaflex online buy lisinopril hydrocodone online soma online fioricet online sharp ringtones free midi ringtones cheap paxil cheap lorazepam free motorola ringtones mtv ringtones flexeril online alltel ringtones didrex online soma buy zanaflex midi ringtones vicodin online mtv ringtones buy hoodia paxil online sony ericsson ringtones online meridia xenical online rivotril online valium cheap fioricet alprazolam online xenical buy rivotril mp3 ringtones kyocera ringtones paxil online music ringtones wellbutrin online zoloft online free sonyericsson ringtones cheap valium clomid online cheap vigrx cheap lortab alltel ringtones midi ringtones buy flexeril free cingular ringtones wwe ringtones soma online cheap carisoprodol albuterol online cheap ortho buy meridia buy diethylpropion free real ringtones free funny ringtones cheap fioricet buy ultracet tracfone ringtones free funny ringtones order clomid free samsung ringtones clomid online lipitor online online ortho free free ringtones buy lortab valium online xenical online buy soma mp3 ringtones cheap prozac buy albuterol cheap lipitor sagem ringtones cyclobenzaprine online cheap propecia free samsung ringtones but levitra cheap ambien alltel ringtones free verizon ringtones polyphonic ringtones cialis online ericsson ringtones ortho online free wwe ringtones clomid online free mp3 ringtones order vigrx buy clonazepam nexium buy adipex cialis ericsson ringtones free qwest ringtones verizon ringtones cheap sildenafil cheap adipex free kyocera ringtones nexium online midi ringtones free cingular ringtones nextel ringtones nexium online free mono ringtones cingular ringtones buy tenuate sony ringtones order ambien cingular ringtones tracfone ringtones cheap xenical flexeril online zoloft online cialis buy hoodia prozac online valium albuterol online hgh online rivotril online xanax online cheap cyclobenzaprine diazepam online cheap cialis flexeril online sprint ringtones zyban online tracfone ringtones valium online cheap hydrocodone online cyclobenzaprine vigrx online propecia online rivotril online norco online free ringtones free sony ericsson ringtones cheap vigrx free mp3 ringtones free mtv ringtones sagem ringtones tracfone ringtones sony ringtones levitra online online nexium ambien free tracfone ringtones hydrocodone online ambien online but phentermine cheap cialis buy ortho free midi ringtones alprazolam online order lipitor wellbutrin online pharmacy online online samsung ringtones free cool ringtones funny ringtones free alltel ringtones fioricet online nokia ringtones paxil online lortab online free sony ericsson ringtones polyphonic ringtones cheap lipitor order ortho

This task has has been split off from another task. Its programming examples are in need of review to ensure that they fit the requirements of the new task.

In this task, the goal is to find the character length of a string. This means encodings like UTF-8 need to be handled properly, as there is not necessarily a one-to-one relationship between bytes and characters.

For byte length, see String Byte Length.

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

Standard: ANSI C (AKA C89):

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;
 }

For wide character strings (usually Unicode):

 #include <stdio.h>
 #include <wchar.h>
 
 int main(void) 
 {
    wchar_t *s = L"\x304A\x306F\x3088\x3046"; /* Japanese hiragana ohayou */
    size_t length;
 
    length = wcslen(s);
    printf("Length in characters = %d\n", length);
    printf("Length in bytes      = %d\n", sizeof(s) * sizeof(wchar_t));
    
    return 0;
 }

C

Standard: ISO C (AKA C 98):

Compiler: g 4.0.2

 #include <string> // note: not <string.h>
 
 int main()
 {
   std::string s = "Hello, world!";
   // Always in characters == bytes since sizeof(char) == 1
   std::string::size_type length = s.length(); // option 1: In Characters/Bytes
   std::string::size_type size = s.size();     // option 2: In Characters/Bytes
 }

For wide character strings:

 #include <string>
 
 int main()
 {
   std::wstring s = L"\u304A\u306F\u3088\u3046";
   std::wstring::size_type length = s.length();
}

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!")

E

"Hello World".size()

Forth

Interpreter: ANS Forth

 CREATE s ," Hello world" \ create string "s"
 s C@ ( -- length )

Haskell

Interpreter: GHCi 6.6, Hugs

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 most commonly used characters are represented by one 16-bit value, while rarer ones like some mathematical symbols are represented by two.

The length method of String objects gives the number of 16-bit values used to encode a string.

String s = "Hello, world!";
int length = s.length();

Since Java 1.5, the actual number of characters can be determined by calling the codePointCount method.

String str = "\uD834\uDD2A"; //U 1D12A
int length1 = str.length(); //2
int length2 = str.codePointCount(0, str.length()); //1

JavaScript

JavaScript encodes strings in UTF-16, which represents each character with one or two 16-bit values. The most commonly used characters are represented by one 16-bit value, while rarer ones like some mathematical symbols are represented by two.

JavaScript has no built-in way to determine how many characters are in a string. However, if the string only contains commonly used characters, the number of characters will be equal to the number of 16-bit values used to represent the characters.

var str1 = "Hello, world!";
var len1 = str1.length; //13

var str2 = "\uD834\uDD2A"; //U 1D12A represented by a UTF-16 surrogate pair
var len2 = str2.length; //2

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 any 5.X

 my $length = length "Hello, world!";

PHP

 $length = strlen('Hello, world!');

PL/SQL

DECLARE
  string VARCHAR2( 50 ) := 'Hello, world!';
  stringlength NUMBER;
BEGIN
  stringlength := length( string );
END;

Python

Interpreter: Python 2.4

length = len("The length of this string will be determined")

Ruby

Library: active_support

 require 'active_support'
 puts "Hello World".chars.length

Scheme

 (string-length "Hello world")

Seed7

 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 length "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 characters is %d"  $s1 [string length $s1]]
 puts [format "length of \"%s\" in characters is %d"  $s2 [string length $s2]]

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

Len(string|varname)

Returns the length of the string|varname 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"