std::showbase, std::noshowbase
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<metanoindex/>
<tbody> </tbody>| Definido no cabeçalho <ios>
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std::ios_base& showbase( std::ios_base& str ); |
(1) | |
std::ios_base& noshowbase( std::ios_base& str ); |
(2) | |
1)
permite a bandeira
showbase no str fluxo, como se chamando str.setf(std::ios_base::showbase)Original:
enables the
showbase flag in the stream str as if by calling str.setf(std::ios_base::showbase)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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2)
desabilita a bandeira
showbase no str fluxo, como se chamando str.unsetf(std::ios_base::showbase)Original:
disables the
showbase flag in the stream str as if by calling str.unsetf(std::ios_base::showbase)The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Trata-se de um manipulador de I / O, que pode ser chamada com uma indicação tal como para qualquer
out << std::showbase out de std::basic_ostream tipo ou com uma indicação tal como para qualquer in >> std::showbase in de std::basic_istream tipo.Original:
This is an I/O manipulator, it may be called with an expression such as
out << std::showbase for any out of type std::basic_ostream or with an expression such as in >> std::showbase for any in of type std::basic_istream.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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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 <sstream>
#include <locale>
#include <iostream>
#include <iomanip>
int main()
{
// showbase affects the output of octals and hexadecimals
std::cout << std::hex
<< "showbase: " << std::showbase << 42 << '\n'
<< "noshowbase: " << std::noshowbase << 42 << '\n';
// and both input and output of monetary values
std::locale::global(std::locale("en_US.utf8"));
long double val = 0;
std::istringstream is("3.14");
is >> std::showbase >> std::get_money(val);
std::cout << "With showbase, parsing 3.14 as money gives " << val << '\n';
is.seekg(0);
is >> std::noshowbase >> std::get_money(val);
std::cout << "Without showbase, parsing 3.14 as money gives " << val << '\n';
}
Saída:
showbase: 0x2a
noshowbase: 2a
With showbase, parsing 3.14 as money gives 0
Without showbase, parsing 3.14 as money gives 314
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) | |