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{{task}}
{{Template:split-review}}
{{Template:split-review}}
In this task, the goal is to find the <em>character</em> 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.
In this task, the goal is to find the <em>character</em> 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.
Line 59: Line 59:
char *p = (char *) string;
char *p = (char *) string;
while (*p++ != '\0') length++;
while (*p != '\0') length ;
return 0;
return 0;
Line 93: Line 93:
}
}


==[[C plus plus|C++]]==
==[[C plus plus|C ]]==
[[Category:C plus plus|C++]]
[[Category:C plus plus|C ]]


'''Standard:''' [[ISO C plus plus|ISO C++]] (AKA [[C plus plus 98|C++98]]):
'''Standard:''' [[ISO C plus plus|ISO C ]] (AKA [[C plus plus 98|C 98]]):


'''Compiler:''' g++ 4.0.2
'''Compiler:''' g 4.0.2


#include <string> // note: '''not''' <string.h>
#include <string> // note: '''not''' <string.h>
Line 124: Line 124:


'''Platform:''' [[.NET]]
'''Platform:''' [[.NET]]
'''Language Version:''' 1.0+
'''Language Version:''' 1.0


string s = "Hello, world!";
string s = "Hello, world!";
Line 195: Line 195:


Since Java 1.5, the actual number of characters can be determined by calling the codePointCount method.
Since Java 1.5, the actual number of characters can be determined by calling the codePointCount method.
String str = "\uD834\uDD2A"; //U+1D12A
String str = "\uD834\uDD2A"; //U 1D12A
int length1 = str.length(); //2
int length1 = str.length(); //2
int length2 = str.codePointCount(0, str.length()); //1
int length2 = str.codePointCount(0, str.length()); //1
Line 208: Line 208:
var len1 = str1.length; //13
var len1 = str1.length; //13
var str2 = "\uD834\uDD2A"; //U+1D12A represented by a UTF-16 surrogate pair
var str2 = "\uD834\uDD2A"; //U 1D12A represented by a UTF-16 surrogate pair
var len2 = str2.length; //2
var len2 = str2.length; //2