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std::skipws, std::noskipws

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< cpp‎ | io‎ | manip

 
 
Input / Output-Bibliothek
I / O-Manipulatoren
C-style I / O
Puffern
Original:
Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(veraltet)
Streams
Original:
Streams
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Abstraktionen
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Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
Datei-I / O
Original:
File I/O
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basic_ifstream
basic_ofstream
basic_fstream
String I / O
Original:
String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Array I / O
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Array I/O
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istrstream(veraltet)
ostrstream(veraltet)
strstream(veraltet)
Types
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Types
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streamoff
streamsize
fpos
Fehler Kategorie Schnittstelle
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Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
Eingang / Ausgang Manipulatoren
Gleitkomma-Formatierung
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Floating-point formatting
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Integer-Formatierung
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Integer formatting
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Boolean Formatierung
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Boolean formatting
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boolalpha
noboolalpha
Feldbreite und fill Kontrolle
Original:
Field width and fill control
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Andere Formatierungen
Original:
Other formatting
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Whitespace-Verarbeitung
Original:
Whitespace processing
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skipws
noskipws
Output Spülung
Original:
Output flushing
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Statusflags Manipulation
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Status flags manipulation
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Zeit und Geld I / O
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Time and money I/O
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get_money(C++11)
get_time(C++11)
put_money(C++11)
put_time(C++11)
 
Defined in header <ios>
std::ios_base& skipws( std::ios_base& str );
(1)
std::ios_base& noskipws( std::ios_base& str );
(2)
Aktiviert oder deaktiviert das Überspringen von führenden Leerzeichen durch die formatierte Eingabe-Funktionen (standardmäßig aktiviert). Hat keine Auswirkungen auf die Produktion .
Original:
Enables or disables skipping of leading whitespace by the formatted input functions (enabled by default). Has no effect on output.
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1)
ermöglicht die skipws Flagge in den Strom str, als ob durch den Aufruf str.setf(std::ios_base::skipws)
Original:
enables the skipws flag in the stream str as if by calling str.setf(std::ios_base::skipws)
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2)
deaktiviert die skipws Flagge in den Strom str, als ob durch den Aufruf str.unsetf(std::ios_base::skipws)
Original:
disables the skipws flag in the stream str as if by calling str.unsetf(std::ios_base::skipws)
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Das Leerzeichen übersprungen wird vom Konstruktor std::basic_istream::sentry, liest und verwirft die Zeichen als Leerraum von der std::ctype Facette des Streams durchdrungen locale klassifiziert durchgeführt .
Original:
The whitespace skipping is performed by the constructor of std::basic_istream::sentry, which reads and discards the characters classified as whitespace by the std::ctype facet of the stream's imbued locale.
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Dies ist ein I / O-Manipulators, kann es mit einem Expressionsvektor wie out << std::noskipws für jede out vom Typ std::basic_ostream oder mit einem Expressionsvektor wie in >> std::noskipws für jede in vom Typ std::basic_istream aufgerufen werden .
Original:
This is an I/O manipulator, it may be called with an expression such as out << std::noskipws for any out of type std::basic_ostream or with an expression such as in >> std::noskipws for any in of type std::basic_istream.
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Inhaltsverzeichnis

[Bearbeiten] Parameter

str -
Verweisen auf I / O-Strom
Original:
reference to I/O stream
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[Bearbeiten] Rückgabewert

str (Verweis auf den Stream nach Manipulation)
Original:
str (reference to the stream after manipulation)
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[Bearbeiten] Beispiel

#include <iostream>
#include <sstream>
int main()
{
    char c1, c2, c3;
    std::istringstream("a b c") >> c1 >> c2 >> c3;
    std::cout << "Default  behavior: c1 = " << c1 << " c2 = " << c2 << " c3 = " << c3 << '\n';
    std::istringstream("a b c") >> std::noskipws >> c1 >> c2 >> c3;
    std::cout << "noskipws behavior: c1 = " << c1 << " c2 = " << c2 << " c3 = " << c3 << '\n';
}

Output:

Default  behavior: c1 = a c2 = b c3 = c
noskipws behavior: c1 = a c2 =   c3 = b

[Bearbeiten] Siehe auch

löscht die angegebene ios_base Fahnen
Original:
clears the specified ios_base flags
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(Funktion) [edit]
Legt die angegebene ios_base Fahnen
Original:
sets the specified ios_base flags
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(Funktion) [edit]