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std::wctob

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< cpp‎ | string‎ | multibyte

 
 
Strings Bibliothek
Null-terminierte Strings
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Null-terminated strings
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Byte-Strings
Multibyte-Strings
Wide Strings
Classes
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Classes
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basic_string
char_traits
 
Nullterminierten Multibyte Strings
Wide / Multibyte Konvertierungen
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Wide/multibyte conversions
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mbsinit
Types
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Types
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mbstate_t
 
Defined in header <cwchar>
int wctob( std::wint_t c );
Narrows eine breite Charakter c wenn seine Multibyte-Zeichen entspricht in der ersten Schaltzustand ist ein Single-Byte .
Original:
Narrows a wide character c if its multibyte character equivalent in the initial shift state is a single byte.
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Dieser ist in der Regel für die Zeichen aus dem ASCII-Zeichensatz möglich, da die meisten Multibyte-Kodierungen (wie UTF-8) verwenden einzelnen Bytes, um diese Zeichen zu kodieren .
Original:
This is typically possible for the characters from the ASCII character set, since most multibyte encodings (such as UTF-8) use single bytes to encode those characters.
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Inhaltsverzeichnis

[Bearbeiten] Parameter

c -
Breitzeichen einzuengen
Original:
wide character to narrow
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[Bearbeiten] Rückgabewert

EOF wenn c stellen keine Multibyte-Zeichen mit einer Länge 1 in ersten Schaltzustand .
Original:
EOF if c does not represent a multibyte character with length 1 in initial shift state.
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Andernfalls wird die Single-Byte-Darstellung c als unsigned char um int
Original:
Otherwise, the single-byte representation of c as unsigned char converted to int
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[Bearbeiten] Beispiel

#include <cwchar>
#include <cstdio>
#include <clocale>
 
int main()
{
    std::setlocale(LC_ALL, "");
    std::printf("narrow: %c\nnarrowed from wide: %c\n", 'a', std::wctob(L'a'));
}

Output:

narrow: a
narrowed from wide: a

[Bearbeiten] Siehe auch

weitet sich ein Single-Byte engen Charakter-Zeichen, wenn möglich
Original:
widens a single-byte narrow character to wide character, if possible
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(Funktion) [edit]
[virtuell]
wandelt ein Zeichen oder Zeichen aus charT um char
Original:
converts a character or characters from charT to char
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(virtuellen geschützten Member-Funktion of std::ctype) [edit]
C documentation for wctob