Espacios de nombres
Variantes
Acciones

std::basic_ios::eof

De cppreference.com
< cpp‎ | io‎ | basic ios

 
 
Entrada / salida de la biblioteca
I / O manipuladores
C-estilo 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(obsoleto)
Arroyos
Original:
Streams
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Abstracciones
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
Cadena de 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 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(obsoleto)
ostrstream(obsoleto)
strstream(obsoleto)
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
Error interfaz categoría
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_ios
Las funciones miembro
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_ios::basic_ios
basic_ios::~basic_ios
Funciones del Estado
Original:
State functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
basic_ios::good
basic_ios::eof
basic_ios::fail
basic_ios::bad
basic_ios::operator!
basic_ios::operator bool
basic_ios::rdstate
basic_ios::setstate
basic_ios::clear
Formato
Original:
Formatting
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
basic_ios::copyfmt
basic_ios::fill
Varios
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_ios::exceptions
basic_ios::imbue
basic_ios::rdbuf
basic_ios::tie
basic_ios::narrow
basic_ios::widen
Protegido funciones miembro
Original:
Protected 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_ios::init
basic_ios::move
basic_ios::swap
basic_ios::set_rdbuf
 
bool eof() const;
Devoluciones true si el flujo asociado ha llegado al final de su archivo. En concreto, los rendimientos true eofbit si se encuentra en rdstate() .
Original:
Returns true if the associated stream has reached end-of-file. Specifically, returns true if eofbit is set in rdstate().
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Contenido

[editar] Parámetros

(Ninguno)
Original:
(none)
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

true si una de fin de archivo se ha producido, de otro modo false .
Original:
true if an end-of-file has occurred, false otherwise.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[editar] Notas

Esta función sólo informa sobre el estado corriente tal como se establece por la más reciente operación I / O, no examina el origen de datos asociado. Por ejemplo, si la más reciente de E / S fue un get(), que devuelve el último byte de un archivo, eof() vuelve false. El próximo get() no puede leer nada y se establece la eofbit. Sólo entonces se vuelve eof() true .
Original:
This function only reports the stream state as set by the most recent I/O operation, it does not examine the associated data source. For example, if the most recent I/O was a get(), which returned the last byte of a file, eof() returns false. The next get() fails to read anything and sets the eofbit. Only then eof() returns true.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
En el uso típico, el procesamiento de flujo de entrada se detiene en cualquier error; eof() fail() y se utilizan entonces para distinguir entre diferentes circunstancias de error .
Original:
In typical usage, input stream processing stops on any error; eof() and fail() are then used to distinguish between different error conditions.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[editar] Ejemplo

[edit]
#include <iostream>
#include <fstream>
#include <cstdlib>
int main()
{
    std::ifstream file("test.txt");
    if(!file)  // operator! is used here
    {  
        std::cout << "File opening failed\n";
        return EXIT_FAILURE;
    }
 
    // typical C++ I/O loop uses the return value of the I/O function
    // as the loop controlling condition, operator bool() is used here
    for(int n; file >> n; ) {
       std::cout << n << ' ';
    }
    std::cout << '\n';
 
    if (file.bad())
        std::cout << "I/O error while reading\n";
    else if (file.eof())
        std::cout << "End of file reached successfully\n";
    else if (file.fail())
        std::cout << "Non-integer data encountered\n";
}


[editar] Ver también

ios_base::iostate flags basic_ios accessors
eofbit failbit badbit good() fail() bad() eof() operator bool() operator!()
false false false true false false false true false
false false true false true true false false true
false true false false true false false false true
false true true false true true false false true
true false false false false false true true false
true false true false true true true false true
true true false false true false true false true
true true true false true true true false true
cheques para el final de archivo
Original:
checks for the end-of-file
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(función) [edit]