◐ Shell
clean mode source ↗

std::iswblank – cppreference.com

Aus cppreference.com

<metanoindex/>

<tbody> </tbody>

definiert in Header

<cwctype>

int iswblank( std::wint_t ch );

 (seit C++11)

Prüft, ob die gegebene breite Zeichen als Leerzeichen (das heißt, ein Leerzeichen zu trennen Wörter in einem Satz verwendet) von der aktuellen C locale eingestuft. In der Standardeinstellung für locale C sind nur Raum (0x20) und horizontaler Tabulator (0x09) Leerzeichen .

Original:

Checks if the given wide character is classified as blank character (that is, a whitespace character used to separate words in a sentence) by the current C locale. In the default C locale, only space (0x20) and horizontal tab (0x09) are blank characters.

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

Parameter

ch -

Wide-Character

Original:

wide character

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

Rückgabewert

Nicht-Null-Wert (true), wenn die breite Zeichen ein Leerzeichen ist, 0 (false) ansonsten .

Original:

Non-zero value (true) if the wide character is a blank character, 0 (false) otherwise.

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

Beispiel

#include <iostream>
#include <cwctype>
#include <clocale>

int main()
{
    wchar_t c = L'\u3000'; // Ideographic space ('　')

    std::cout << std::hex << std::showbase << std::boolalpha;
    std::cout << "in the default locale, iswblank(" << (std::wint_t)c << ") = "
              << (bool)std::iswblank(c) << '\n';
    std::setlocale(LC_ALL, "en_US.utf8");
    std::cout << "in Unicode locale, iswblank(" << (std::wint_t)c << ") = "
              << (bool)std::iswblank(c) << '\n';
}

Output: 

in the default locale, iswblank(0x3000) = false
in Unicode locale, iswblank(0x3000) = true

Siehe auch

checks if a character is classified as a blank character by a locale
(Funktions-Template) [edit]

(C++11)

prüft, ob ein Zeichen ein Leerzeichen ist

Original:

checks if a character is a blank character

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


(Funktion) [edit]

C documentation for iswblank

ASCII values
(hex) 		characters

iscntrl
iswcntrl

isprint
iswprint

isspace
iswspace

isblank
iswblank

isgraph
iswgraph

ispunct
iswpunct

isalnum
iswalnum

isalpha
iswalpha

isupper
iswupper

islower
iswlower

isdigit
iswdigit

isxdigit
iswxdigit

0 - 8 0x00-0x08 control codes (NUL, etc.) ≠0 0 0 0 0 0 0 0 0 0 0 0
9 0x09 tab (\t) ≠0 0 ≠0 ≠0 0 0 0 0 0 0 0 0
10 - 13 0x0A-0x0D whitespaces (\n,\v,\f,\r) ≠0 0 ≠0 0 0 0 0 0 0 0 0 0
14 - 31 0x0E-0x1F control codes ≠0 0 0 0 0 0 0 0 0 0 0 0
32 0x20 space 0 ≠0 ≠0 ≠0 0 0 0 0 0 0 0 0
33 - 47 0x21-0x2F !"#$%&'()*+,-./ 0 ≠0 0 0 ≠0 ≠0 0 0 0 0 0 0
48 - 57 0x30-0x39 0123456789 0 ≠0 0 0 ≠0 0 ≠0 0 0 0 ≠0 ≠0
58 - 64 0x3a-0x40 :;<=>?@ 0 ≠0 0 0 ≠0 ≠0 0 0 0 0 0 0
65 - 70 0x41-0x46 ABCDEF 0 ≠0 0 0 ≠0 0 ≠0 ≠0 ≠0 0 0 ≠0
71 - 90 0x47-0x5A GHIJKLMNOPQRSTUVWXYZ 0 ≠0 0 0 ≠0 0 ≠0 ≠0 ≠0 0 0 0
91 - 96 0x5B-0x60 [\]^_` 0 ≠0 0 0 ≠0 ≠0 0 0 0 0 0 0
97 -102 0x61-0x66 abcdef 0 ≠0 0 0 ≠0 0 ≠0 ≠0 0 ≠0 0 ≠0
103-122 0x67-0x7A ghijklmnopqrstuvwxyz 0 ≠0 0 0 ≠0 0 ≠0 ≠0 0 ≠0 0 0
123-126 0x7B-0x7E {|}~ 0 ≠0 0 0 ≠0 ≠0 0 0 0 0 0 0
127 0x7F backspace character (DEL) ≠0 0 0 0 0 0 0 0 0 0 0 0