std::left, std::right, std::internal
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<metanoindex/>
<tbody> </tbody>| Definido no cabeçalho <ios>
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std::ios_base& left( std::ios_base& str ); |
(1) | |
std::ios_base& right( std::ios_base& str ); |
(2) | |
std::ios_base& internal( std::ios_base& str ); |
(3) | |
Modifica o posicionamento padrão dos caracteres de preenchimento.
left e right aplica a qualquer saída, internal aplica-se a saída, número inteiro de ponto flutuante, e monetária. Não tem efeito sobre entrada.Original:
Modifies the default positioning of the fill characters.
left and right apply to any output, internal applies to integer, floating-point, and monetary output. Has no effect on input.The text has been machine-translated via Google Translate.
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1)
define o
adjustfield do str fluxo para left como se ligando str.setf(std::ios_base::left, std::ios_base::adjustfield)Original:
sets the
adjustfield of the stream str to left as if by calling str.setf(std::ios_base::left, std::ios_base::adjustfield)The text has been machine-translated via Google Translate.
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2)
define o
adjustfield do str fluxo para right como se ligando str.setf(std::ios_base::right, std::ios_base::adjustfield)Original:
sets the
adjustfield of the stream str to right as if by calling str.setf(std::ios_base::right, std::ios_base::adjustfield)The text has been machine-translated via Google Translate.
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3)
define o
adjustfield do str fluxo para internal como se ligando str.setf(std::ios_base::internal, std::ios_base::adjustfield)Original:
sets the
adjustfield of the stream str to internal as if by calling str.setf(std::ios_base::internal, std::ios_base::adjustfield)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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Trata-se de um manipulador de I / O, que pode ser chamada com uma indicação tal como para qualquer
out << std::left out de std::basic_ostream tipo ou com uma indicação tal como para qualquer in >> std::left in de std::basic_istream tipo.Original:
This is an I/O manipulator, it may be called with an expression such as
out << std::left for any out of type std::basic_ostream or with an expression such as in >> std::left 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 <iomanip>
#include <locale>
int main()
{
std::cout.imbue(std::locale("en_US.utf8"));
std::cout << "Left fill:\n" << std::left << std::setfill('*')
<< std::setw(12) << -1.23 << '\n'
<< std::setw(12) << std::hex << std::showbase << 42 << '\n'
<< std::setw(12) << std::put_money(123, true) << "\n\n";
std::cout << "Internal fill:\n" << std::internal
<< std::setw(12) << -1.23 << '\n'
<< std::setw(12) << 42 << '\n'
<< std::setw(12) << std::put_money(123, true) << "\n\n";
std::cout << "Right fill:\n" << std::right
<< std::setw(12) << -1.23 << '\n'
<< std::setw(12) << 42 << '\n'
<< std::setw(12) << std::put_money(123, true) << '\n';
}
Saída:
Left fill:
-1.23*******
0x2a********
USD *1.23***
Internal fill:
-*******1.23
0x********2a
USD ****1.23
Right fill:
*******-1.23
********0x2a
***USD *1.23
Veja também
muda a largura da próxima entrada / saída de campo Original: changes the width of the next input/output field The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função) | |
muda o caráter de preenchimento Original: changes the fill character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (modelo de função) |