Espaços nominais
Variantes
Acções

std::skipws, std::noskipws

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< cpp‎ | io‎ | manip

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C++
 
De entrada / saída da biblioteca
I / O manipuladores
C estilo de I / O
Buffers
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Buffers
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(obsoleta)
Streams
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Streams
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Abstrações
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Abstractions
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File I / O
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File I/O
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Cordas I / O
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String I/O
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Matriz de I / O
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Array I/O
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(obsoleta)
(obsoleta)
(obsoleta)
Tipos
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Types
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Interface de categoria de erro
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Error category interface
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(C++11)
(C++11)
 
Entrada / saída manipuladores
De ponto flutuante de formatação
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Floating-point formatting
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Formatação inteiro
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Integer formatting
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Formatação booleana
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Boolean formatting
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Largura do campo e controle de preenchimento
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Field width and fill control
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Outra formatação
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Other formatting
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Espaços de processamento
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Whitespace processing
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skipwsnoskipws
Saída de descarga
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Output flushing
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Sinalizadores de status manipulação
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Status flags manipulation
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Tempo e dinheiro I / O
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Time and money I/O
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(C++11)
(C++11)
(C++11)
(C++11)
 
Definido no cabeçalho <ios>
std::ios_base& skipws( std::ios_base& str );
 (1)
std::ios_base& noskipws( std::ios_base& str );
 (2)
Habilita ou desabilita pulando de espaços em branco levando pelas funções de entrada formatados (ativado por padrão). Não tem efeito sobre o produto.
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)
permite a bandeira skipws no str fluxo, como se chamando 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)
desabilita a bandeira skipws no str fluxo, como se chamando 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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O espaço em branco de salto é realizado pelo construtor de std::basic_istream::sentry, que lê e descarta os caracteres classificados como espaços em branco pela faceta std::ctype da localidade imbuído do fluxo.
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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Trata-se de um manipulador de I / O, que pode ser chamada com uma indicação tal como para qualquer out << std::noskipws out de std::basic_ostream tipo ou com uma indicação tal como para qualquer in >> std::noskipws in de 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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Índice

[editar] Parâmetros

str -
referência ao fluxo de E / S
Original:
reference to I/O stream
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[editar] Valor de retorno

str (referência ao fluxo após a manipulação)
Original:
str (reference to the stream after manipulation)
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[editar] Exemplo

#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';
}

Saída: 

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

[editar] Veja também
limpa os sinalizadores ios_base especificados
Original:
clears the specified ios_base flags
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(função) [edit]
define os sinalizadores ios_base especificados
Original:
sets the specified ios_base flags
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(função) [edit]
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