c:stdlib.h:mblen
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c:stdlib.h:mblen [2013/01/22 22:02] |
c:stdlib.h:mblen [2024/02/16 01:04] (current) |
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| + | {{keywords>wiki library source code example reference}} | ||
| + | ====== mblen ====== | ||
| + | |||
| + | <code c> | ||
| + | #include <stdlib.h> | ||
| + | int mblen(const char *str, size_t n); | ||
| + | </code> | ||
| + | ===== Description ===== | ||
| + | Determines how many bytes are used for a character. | ||
| + | |||
| + | |||
| + | |||
| + | <setlocale.h> is for this example nessesary | ||
| + | ===== mblen C Sourcecode Example 1===== | ||
| + | <code c> | ||
| + | /* | ||
| + | * mblen example code | ||
| + | * http://code-reference.com/c/stdlib.h/mblen | ||
| + | */ | ||
| + | |||
| + | #include <stdio.h> /* including standard library */ | ||
| + | //#include <windows.h> /* uncomment this for Windows */ | ||
| + | #include <stdlib.h> | ||
| + | #include <locale.h> /* for setlocale */ | ||
| + | |||
| + | int main(void) | ||
| + | { | ||
| + | setlocale(LC_ALL,""); | ||
| + | char *mbstring = "Ü"; | ||
| + | printf("character %s has a length of %d and MB_CUR_MAX is %i\n", mbstring, mblen(mbstring, 4), MB_CUR_MAX); | ||
| + | |||
| + | return 0; | ||
| + | } | ||
| + | </code> | ||
| + | |||
| + | ==== output example 1 of mblen==== | ||
| + | user@host:~/code-reference.com# ./mblen6 | ||
| + | character Ü has a length of 2 and MB_CUR_MAX is 6 | ||
| + | |||
| + | |||
| + | <setlocale.h> and <wchar.h> is for this example nessesary | ||
| + | ===== mblen C Sourcecode Example 2===== | ||
| + | <code c> | ||
| + | /* | ||
| + | * mblen example code | ||
| + | * http://code-reference.com/c/stdlib.h/mblen | ||
| + | */ | ||
| + | |||
| + | #include <stdio.h> /* including standard library */ | ||
| + | //#include <windows.h> /* uncomment this for Windows */ | ||
| + | #include <stdlib.h> | ||
| + | |||
| + | #include <wchar.h> /* for wchar_t*/ | ||
| + | #include <locale.h> /* for setlocale */ | ||
| + | |||
| + | int main(void) | ||
| + | { | ||
| + | setlocale(LC_ALL,""); | ||
| + | char string[] = "?"; | ||
| + | int length; | ||
| + | wchar_t widechar; | ||
| + | |||
| + | length = mblen(string, MB_CUR_MAX); | ||
| + | mbtowc(&widechar, string, length); | ||
| + | printf("wide character %lc has a length of %d.\n", widechar, length); | ||
| + | |||
| + | return 0; | ||
| + | |||
| + | } | ||
| + | </code> | ||
| + | |||
| + | ==== output example 2 of mblen==== | ||
| + | user@host:~/code-reference.com# ./mblen3 | ||
| + | wide character ? has a length of 3. | ||
| + | |||
| + | |||
| + | |||
| + | |||
| + | |||
| + | |||
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