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std::basic_ostream::tellp

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< cpp‎ | io‎ | basic ostream

 
 
De entrada / saída da biblioteca
I / O manipuladores
C estilo de I / O
Buffers
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Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(obsoleta)
Streams
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Streams
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Abstrações
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Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
File I / O
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File I/O
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basic_ifstream
basic_ofstream
basic_fstream
Cordas I / O
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String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Matriz de I / O
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Array I/O
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istrstream(obsoleta)
ostrstream(obsoleta)
strstream(obsoleta)
Tipos
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Types
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streamoff
streamsize
fpos
Interface de categoria de erro
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Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
std::basic_ostream
Objetos globais
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Global objects
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Funções de membro
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Member functions
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basic_ostream::basic_ostream
basic_ostream::~basic_ostream
basic_ostream::operator=(C++11)
Entrada formatada
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Formatted input
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basic_ostream::operator<<
Entrada não formatado
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Unformatted input
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basic_ostream::put
basic_ostream::write
Posicionamento
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Positioning
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basic_ostream::tellp
basic_ostream::seekp
Diversos
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Miscellaneous
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basic_ostream::flush
basic_ostream::swap(C++11)
Aulas-Membros
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Member classes
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basic_ostream::sentry
Não-membros funções
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Non-member functions
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operator<<(std::basic_ostream)
 
pos_type tellp();
Retorna o indicador de posição de saída do objeto atual streambuf associado.
Original:
Returns the output position indicator of the current associated streambuf object.
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Primeiro, constrói um objeto sentry que verifica o fluxo de erros e libera o empate () 'saída d (a partir do C++ 11) córregos. Depois, se fail()==true, retorna pos_type(-1). Caso contrário, retorna rdbuf()->pubseekoff(0, std::ios_base::cur, std::ios_base::out).
Original:
First, constructs a sentry object which checks the stream for errors and flushes the tie()'d output streams (a partir do C++ 11). Afterwards, if fail()==true, returns pos_type(-1). Otherwise, returns rdbuf()->pubseekoff(0, std::ios_base::cur, std::ios_base::out).
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Índice

[editar] Parâmetros

(Nenhum)
Original:
(none)
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[editar] Valor de retorno

indicador de posição de corrente de saída em caso de sucesso, pos_type(-1) se ocorrer uma falha.
Original:
current output position indicator on success, pos_type(-1) if a failure occurs.
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[editar] Exemplo

#include <iostream>
#include <sstream>
int main()
{
    std::ostringstream s;
    std::cout << s.tellp() << '\n';
    s << 'h';
    std::cout << s.tellp() << '\n';
    s << "ello, world ";
    std::cout << s.tellp() << '\n';
    s << 3.14 << '\n';
    std::cout << s.tellp() << '\n' << s.str();
}

Output:

0
1
13
18
hello, world 3.14

[editar] Veja também

define o indicador de posição de saída
Original:
sets the output position indicator
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(função pública membro) [edit]
retorna o indicador de posição de entrada
Original:
returns the input position indicator
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(of std::basic_istream função pública membro) [edit]
sets the input position indicator
(of std::basic_istream função pública membro) [edit]