String length: Difference between revisions

===Dealing with raw multibyte string===

Following code is written in UTF-8, and environment locale is assumed to be UTF-8 too. Note that "møøse" is here directly written in the source code for clarity, which is not a good idea in general. <code>mbstowcs()</code>, when passed NULL as the first argument, effectively counts the number of chars in given string under current locale.

<lang c>#include <stdio.h>

#include <stdlib.h>

#include <locale.h>

int main()

{

setlocale(LC_CTYPE, "");

char moose[] = "møøse";

printf("bytes: %d\n", sizeof(moose) - 1);

printf("chars: %d\n", (int)mbstowcs(0, moose, 0));

return 0;

}</lang>output<pre>bytes: 7

chars: 5</pre>