std::skipws, std::noskipws
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<metanoindex/>
<tbody> </tbody>| Definido no cabeçalho <ios>
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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)The text has been machine-translated via Google Translate.
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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)The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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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.The text has been machine-translated via Google Translate.
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Parâmetros
| str | - | referência ao fluxo de E / S
Original: reference to I/O stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Valor de retorno
str (referência ao fluxo após a manipulação)Original:
str (reference to the stream after manipulation)The text has been machine-translated via Google Translate.
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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
Veja também
limpa os sinalizadores ios_base especificados Original: clears the specified ios_base flags The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função) | |
define os sinalizadores ios_base especificados Original: sets the specified ios_base flags The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função) | |