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std::iswblank

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< cpp‎ | string‎ | wide

 
 
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Null-terminated strings
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Classes
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Nullterminierten Wide Strings
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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.
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Inhaltsverzeichnis

[Bearbeiten]Parameter

ch -
Wide-Character
Original:
wide character
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[Bearbeiten]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.
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[Bearbeiten]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

[Bearbeiten]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
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(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.) ≠000000000000
9 0x09 tab (\t) ≠00≠0≠000000000
10 - 13 0x0A-0x0D whitespaces (\n,\v,\f,\r) ≠00≠0000000000
14 - 31 0x0E-0x1F control codes ≠000000000000
32 0x20 space 0≠0≠0≠000000000
33 - 47 0x21-0x2F!"#$%&'()*+,-./0≠000≠0≠0000000
48 - 57 0x30-0x3901234567890≠000≠00≠0000≠0≠0
58 - 64 0x3a-0x40:;<=>?@0≠000≠0≠0000000
65 - 70 0x41-0x46ABCDEF0≠000≠00≠0≠0≠000≠0
71 - 90 0x47-0x5AGHIJKLMNOPQRSTUVWXYZ0≠000≠00≠0≠0≠0000
91 - 96 0x5B-0x60[\]^_`0≠000≠0≠0000000
97 -102 0x61-0x66abcdef0≠000≠00≠0≠00≠00≠0
103-122 0x67-0x7Aghijklmnopqrstuvwxyz0≠000≠00≠0≠00≠000
123-126 0x7B-0x7E{|}~0≠000≠0≠0000000
127 0x7F backspace character (DEL) ≠000000000000
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