String Character Length: Difference between revisions
Content deleted Content added
Add Common Lisp |
→[[C]]: + terse version; added return 0 to last version |
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return 0; |
return 0; |
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}; |
}; |
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or (terse version of the above) |
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int main() |
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{ |
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char const *s = "Hello, world!", *p = s; |
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int length = 0; |
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while (*p++) |
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length++; |
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return 0; |
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} |
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or (for string literals only) |
or (for string literals only) |
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char const s[] = "Hello, world!"; |
char const s[] = "Hello, world!"; |
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size_t length = sizeof s - 1; |
size_t length = sizeof s - 1; |
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return 0; |
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} |
} |
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Revision as of 20:07, 21 January 2007
![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 length of a string.
C
Compiler: GCC 3.3.3
#include <string.h> int main(int argc, char ** argv) { const char *string = "Hello, world!"; size_t length = strlen(string); return 0; };
or
int main(int argc, char ** argv) { const char *string = "Hello, world!"; int length; for(length=0; string[length]!='\0'; length++); // for each letter that is not a '\0' adds // one to length's value. // '\0' is the string terminator character. return 0; };
or (terse version of the above)
int main() { char const *s = "Hello, world!", *p = s; int length = 0; while (*p++) length++;
return 0; }
or (for string literals only)
#include <stdlib.h> int main() { char const s[] = "Hello, world!"; size_t length = sizeof s - 1; 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!"; std::string::size_type length = s.length(); }
Java
Compiler: any Java compiler should do
String s = "Hello, world!"; int length = s.length();
C#
Platform: .NET Language Version: 1.0+
string s = "Hello, world!"; int length = s.Length;
mIRC
Compiler: mIRC
alias stringlength { echo -a Your Name is: $len($$?="Whats your name") letters long! }
SML
Interpreter: SML/NJ 110.60, Moscow ML 2.01 (January 2004)
Compiler: MLton 20061107
val strlen = size("Hello, world!");
Python
Interpreter: Python 2.4
length = len("The length of this string will be determined")
Perl
Interpreter: Perl any 5.X
my $length = length "Hello, world!";
PHP
$length = strlen('Hello, world!');
UNIX Shell
With external utilities:
Interpreter: any bourne shell
string='Hello, world!' length=`echo -n "$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
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
Ruby
string="Hello world" print string.length
xTalk
Interpreter: HyperCard
put the length of "Hello World"
or
put the number of characters in "Hello World"
Ada
Compiler: GCC 4.1.2
Str : String := "Hello World"; Length : constant Natural := Str'Length;
Common Lisp
(length "Hello World")