std::wcslen

 

C++

Linguaggio

Concetti

Libreria di Utilità

Stringhe

Contenitori

Algoritmi

Iteratori

Libreria matematca

Input/output

Localizzazione

Espressioni regolari(C++11)

Operazioni atomicche(C++11)

Multithreading(C++11)

 

Stringhe libreria

Null-stringhe terminate Original: Null-terminated strings The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Byte stringhe

Multibyte stringhe

Stringhe larghe

Classi Original: Classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_string

char_traits

 

Stringhe larghe null-terminated

Funzioni Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Carattere manipolazione Original: Character manipulation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
iswalnum iswalpha iswlower iswupper iswdigit iswxdigit iswblank (C++11) wctype iswctype	iswcntrl iswgraph iswspace iswprint iswpunct towlower towupper wctrans towctrans
Le conversioni in formati numerici Original: Conversions to numeric formats The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
wcstol wcstoll wcstoul wcstoull	wcstof wcstod wcstold
Della gestione delle stringhe Original: String manipulation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
wcslen wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp	wcsxfrm wcschr wcsrchr wcspbrk wcsspn wcscspn wcsstr wcstok
Matrice manipolazione Original: Array manipulation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
wmemcpy
wmemmove
wmemcmp
wmemchr
wmemset

 

Elemento definito nell'header <cwchar>
std::size_t wcslen(constwchar_t*str );

Restituisce la lunghezza di una stringa di larghezza, che è il numero di caratteri di larghezza non Null che precedono il carattere nullo finale ampio.

Original:

Returns the length of a wide string, that is the number of non-null wide characters that precede the terminating null wide character.

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Parametri

str

-

puntatore alla stringa con terminazione null larga da esaminare Original: pointer to the null-terminated wide string to be examined The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Valore di ritorno

La lunghezza della stringa con terminazione null largo str.

Original:

The length of the null-terminated wide string str.

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Esempio

#include <iostream>#include <cwchar>int main(){constwchar_t* str = L"Hello, world!";std::wcout<<"The length of L\""<< str <<"\" is "<< std::wcslen(str)<<'\n';}

Output:

The length of L"Hello, world!" is 13

Vedi anche

C documentation for wcslen