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std::iswblank

Da cppreference.com
< cpp‎ | string‎ | wide

 
 
Biblioteca cordas
Strings terminadas
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Null-terminated strings
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Cadeias de bytes
Multibyte cordas
Cordas de largura
Classes
Original:
Classes
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basic_string
char_traits
 
Strings terminadas largura
Funções
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Functions
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Manipulação personagem
Original:
Character manipulation
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Conversões para formatos numéricos
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Conversions to numeric formats
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Manipulação de cadeia
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String manipulation
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Manipulação matriz
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Array manipulation
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wmemcpy
wmemmove
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Defined in header <cwctype>
int iswblank( std::wint_t ch );
(a partir do C++ 11)
Verifica se o caráter dado ampla é classificado como caractere em branco (ou seja, um personagem espaços utilizados para separar as palavras em uma frase) pela localidade C atual. No local padrão C, apenas o espaço (0x20) e guia horizontal (0x09) são caracteres em branco.
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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Índice

[editar] Parâmetros

ch -
caráter de largura
Original:
wide character
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[editar] Valor de retorno

Valor diferente de zero (true) se o personagem de largura é um personagem branco, 0 (false) de outra forma.
Original:
Non-zero value (true) if the wide character is a blank character, 0 (false) otherwise.
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[editar] Exemplo

#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

[editar] Veja também

checks if a character is classified as a blank character by a locale
(modelo de função) [edit]
(C++11)
verifica se um personagem é um personagem branco
Original:
checks if a character is a blank character
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(função) [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