Namespace
Varianti

std::skipws, std::noskipws

Da cppreference.com.
< cpp‎ | io‎ | manip

 
 
Ingresso / libreria di output
I / O manipolatori
C-style I / O
Buffer
Original:
Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(deprecato)
Streams
Original:
Streams
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Astrazioni
Original:
Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
File 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
Original:
Array I/O
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istrstream(deprecato)
ostrstream(deprecato)
strstream(deprecato)
Tipi
Original:
Types
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streamoff
streamsize
fpos
Errore categoria interfaccia
Original:
Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
Ingresso / uscita manipolatori
Virgola mobile formattazione
Original:
Floating-point formatting
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Formattazione Integer
Original:
Integer formatting
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Formattazione Boolean
Original:
Boolean formatting
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boolalpha
noboolalpha
Larghezza del campo e il controllo di riempimento
Original:
Field width and fill control
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Di formattazione
Original:
Other formatting
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Elaborazione degli spazi vuoti
Original:
Whitespace processing
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skipws
noskipws
Uscita di lavaggio
Original:
Output flushing
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Flag di stato manipolazione
Original:
Status flags manipulation
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Tempo e denaro I / O
Original:
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)
Attiva o disattiva il salto di spazi bianchi da parte delle funzioni di input formattati (attivata per impostazione predefinita). Non ha alcun effetto sulla produzione.
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)
consente la bandiera skipws nel str flusso come se chiamando 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)
disabilita la bandiera skipws nel str flusso come se chiamando 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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Il salto spazio viene eseguita dal costruttore di std::basic_istream::sentry, che legge e scarta i personaggi classificati come spazi bianchi dalla sfaccettatura std::ctype del locale intrisa del torrente.
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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Si tratta di un manipolatore di I / O, può essere chiamato con espressioni quali out << std::noskipws per qualsiasi out di std::basic_ostream tipo o con un'espressione come in >> std::noskipws per qualsiasi in di std::basic_istream tipo.
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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Indice

[modifica] Parametri

str -
riferimento al flusso di I / O
Original:
reference to I/O stream
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[modifica] Valore di ritorno

str (riferimento al flusso dopo la manipolazione)
Original:
str (reference to the stream after manipulation)
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[modifica] Esempio

#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

[modifica] Vedi anche

cancella le bandiere ios_base specificati
Original:
clears the specified ios_base flags
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(funzione) [edit]
imposta i flag ios_base specificati
Original:
sets the specified ios_base flags
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(funzione) [edit]