operator<<<div class="t-tr-text">(Std :: basic_ostream)<div class="t-tr-dropdown"><div><div><div class="t-tr-dropdown-arrow-border"></div><div class="t-tr-dropdown-arrow"></div><div class="t-tr-dropdown-h">Original:</div><div class="t-tr-dropdown-orig">(std::basic_ostream)</div><div class="t-tr-dropdown-notes">The text has been machine-translated via [http://translate.google.com Google Translate].<br/> You can help to correct and verify the translation. Click [http://en.cppreference.com/w/Cppreference:MachineTranslations here] for instructions.</div></div></div></div></div>

 

C++

Suporte ao Compilador

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Linguagem

Headers da Biblioteca Standard

Requerimentos nomeados

Feature test macros (C++20)

Biblioteca de suporte de língua

Biblioteca de conceitos(C++20)

Biblioteca de diagnósticos

Biblioteca de utilitários em geral

Biblioteca de strings

Biblioteca de containers

Ranges library(C++20)

Biblioteca de iteradores

Biblioteca de algorítmos

Biblioteca numérica

Biblioteca de localizações

Biblioteca de input/output

Biblioteca de sistema de arquivo(C++17)

Biblioteca de expressões regulares(C++11)

Biblioteca de operações atômicas(C++11)

Biblioteca de suporte de thread(C++11)

Especificações Técnicas

Índice de symbolos

Bibliotecas externas

 

De entrada / saída da biblioteca

I / O manipuladores

C estilo de I / O

Buffers Original: Buffers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_streambuf

basic_filebuf

basic_stringbuf

strstreambuf (obsoleta)

Streams Original: Streams The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Abstrações Original: Abstractions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

ios_base

basic_ios

basic_istream

basic_ostream

basic_iostream

File I / O Original: File I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_ifstream

basic_ofstream

basic_fstream

Cordas I / O Original: String I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_istringstream

basic_ostringstream

basic_stringstream

Matriz de I / O Original: Array I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

istrstream (obsoleta)

ostrstream (obsoleta)

strstream (obsoleta)

Tipos Original: Types The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

streamoff

streamsize

fpos

Interface de categoria de erro Original: Error category interface The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

iostream_category (C++11)

io_errc (C++11)

 

std::basic_ostream

Objetos globais Original: Global objects The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
coutwcout	cerrwcerr	clogwclog
Funções de membro Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
basic_ostream::basic_ostream
basic_ostream::~basic_ostream
basic_ostream::operator= (C++11)
Entrada formatada Original: Formatted input The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
basic_ostream::operator<<
Entrada não formatado Original: Unformatted input The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
basic_ostream::put
basic_ostream::write
Posicionamento Original: Positioning The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
basic_ostream::tellp
basic_ostream::seekp
Diversos Original: Miscellaneous The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
basic_ostream::flush
basic_ostream::swap (C++11)
Aulas-Membros Original: Member classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
basic_ostream::sentry
Não-membros funções Original: Non-member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
operator<<(std::basic_ostream)

 

template<class CharT, class Traits> basic_ostream<CharT,Traits>& operator<<( basic_ostream<CharT,Traits>& os,                                          CharT ch ); template<class CharT, class Traits> basic_ostream<CharT,Traits>& operator<<( basic_ostream<CharT,Traits>& os,                                          char ch ); template<class Traits > basic_ostream<char,Traits>& operator<<( basic_ostream<char,Traits>& os,                                         char ch ); template<class Traits > basic_ostream<char,Traits>& operator<<( basic_ostream<char,Traits>& os,                                         signedchar ch ); template<class Traits > basic_ostream<char,Traits>& operator<<( basic_ostream<char,Traits>& os,                                         unsignedchar ch );	(1)
template<class CharT, class Traits > basic_ostream<CharT,Traits>& operator<<( basic_ostream<CharT,Traits>& os,                                          const CharT* s ); template<class CharT, class Traits > basic_ostream<CharT,Traits>& operator<<( basic_ostream<CharT,Traits>& os,                                          constchar* s ); template<class Traits > basic_ostream<char,Traits>& operator<<( basic_ostream<char,Traits>& os,                                           constchar* s ); template<class Traits > basic_ostream<char,Traits>& operator<<( basic_ostream<char,Traits>& os,                                         constsignedchar* s ); template<class Traits > basic_ostream<char,Traits>& operator<<( basic_ostream<char,traits>& os,                                         constunsignedchar* s );	(2)
template<class CharT, class Traits, class T > basic_ostream< charT, traits >& operator<<( basic_ostream<CharT,Traits>&& os,                                             const T& value );	(3)	(desde C++11)

Insere um caractere ou uma cadeia de caracteres.

Original:

Inserts a character or a character string.

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1-2)

são formatados funções de saída: eles começam a execução através da construção de um objeto de sentry tipo, o que esvazia os buffers de saída tie()'d se necessário e verifica os erros de fluxo. Após a construção, se os retornos de sentinela objeto false, essas funções retornam sem tentar qualquer saída. Se ocorrer um erro durante a saída, estas funções chamam setstate(ios_base::failbit). Se uma exceção é lançada durante a saída, então ios :: badbit está definido (a exceção é suprimida a menos exceptions()&badbit)!=0, caso em que é relançada)

Original:

are formatted output functions: they begin execution by constructing an object of type sentry, which flushes the tie()'d output buffers if necessary and checks the stream errors. After construction, if the sentry object returns false, these functions return without attempting any output. If an error occurs during output, these functions call setstate(ios_base::failbit). If an exception is thrown during output, then ios::badbit is set (the exception is suppressed unless exceptions()&badbit)!=0, in which case it is rethrown)

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1)

Insere uma ch personagem. Se o tipo de caracteres não é CharT, ele é primeiro convertido com os.widen(ch). O preenchimento é determinado como se de Fase 3 de num_put::put(). Após a inserção, é chamado width(0).

Original:

Inserts a character ch. If the type of the character is not CharT, it is first converted with os.widen(ch). Padding is determined as if by Stage 3 of num_put::put(). After insertion, width(0) is called.

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2)

Insere personagens sucessivas da matriz de caracteres cujo primeiro elemento é apontado por s.

Original:

Inserts successive characters from the character array whose first element is pointed to by s.

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• para as sobrecargas primeiro e terceiro (onde CharT corresponde ao tipo de ch), exatamente traits::length(s) personagens estão inseridos.

  Original:

  for the first and third overloads (where CharT matches the type of ch), exactly traits::length(s) characters are inserted.

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• para a segunda sobrecarga, exatamente std::char_traits<char>::length(s) personagens estão inseridos.

  Original:

  for the second overload, exactly std::char_traits<char>::length(s) characters are inserted.

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• para os dois últimos sobrecargas, exatamente traits::length(reinterpret_cast<constchar*>(s)) estão inseridos.

  Original:

  for the last two overloads, exactly traits::length(reinterpret_cast<constchar*>(s)) are inserted.

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O preenchimento é determinado como se de Fase 3 de num_put::put(). Todos os personagens são alargadas usando os.widen() antes da inserção. Após a inserção, é chamado width(0).

Original:

Padding is determined as if by Stage 3 of num_put::put(). All characters are widened using os.widen() before insertion. After insertion, width(0) is called.

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3)

Chama o operador de inserção apropriada, dada uma referência a um objeto rvalue fluxo de saída (equivalente a os << value).

Original:

Calls the appropriate insertion operator, given an rvalue reference to an output stream object (equivalent to os << value).

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Parâmetros

os	-	saída de fluxo de dados para inserir Original: output stream to insert data to The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ch	-	referência a um personagem para inserir Original: reference to a character to insert The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
s	-	ponteiro para uma cadeia de caracteres para inserir Original: pointer to a character string to insert 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

st

Exemplo

#include <iostream>#include <sstream>int main(){std::cout<<"Hello, world"// the const char* overlaod<<'\n';// the char overloadstd::string s =(std::ostringstream()<<1.2).str();// rvalue overloadstd::cout<< s <<'\n';}

Saída:

Hello, world 1.2

Veja também

operator<<	insere dados formatados Original: inserts formatted data The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função pública membro)