std::left, std::right, std::internal
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Definido no cabeçalho <ios> | ||
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.
1) 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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define o
2) 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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define o
3) 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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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::leftin 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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Índice |
[editar]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. |
[editar]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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[editar]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
[editar]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) | |
