Namespace
Varianti

std::ios_base::failure

Da cppreference.com.
< cpp‎ | io‎ | ios base

 
 
Ingresso / libreria di output
I / O manipolatori
C-style I / O
Buffer
Original:
Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(deprecato)
Streams
Original:
Streams
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Astrazioni
Original:
Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
File I / O
Original:
File I/O
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basic_ifstream
basic_ofstream
basic_fstream
String I / O
Original:
String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Array I / O
Original:
Array I/O
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istrstream(deprecato)
ostrstream(deprecato)
strstream(deprecato)
Tipi
Original:
Types
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streamoff
streamsize
fpos
Errore categoria interfaccia
Original:
Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
ios_base::failure
Membri funzioni
Original:
Member functions
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failure::failure
 
Defined in header <ios>
class failure;
Il std::ios_base::failure classe definisce un oggetto eccezione che viene generata in caso di fallimento da parte delle funzioni di Input / Output biblioteca.
Original:
The class std::ios_base::failure defines an exception object that is thrown on failure by the functions in the Input/Output library.
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cpp/error/exceptionstd-ios base-failure-2003-inheritance.svg
Informazioni sull'immagine

Inheritance diagram (C fino + 11)

cpp/error/exceptioncpp/error/runtime errorcpp/error/system errorstd-ios base-failure-inheritance.svg
Informazioni sull'immagine

Inheritance diagram (dal C++11)

Indice

[modifica] Membri funzioni

costruisce l'oggetto eccezione
Original:
constructs the exception object
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(membro pubblico funzione) [edit]

Inherited from std::system_error

Member functions

restituisce il codice di errore
Original:
returns error code
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(membro pubblico of std::system_error funzione) [edit]
[virtuale]
restituisce stringa esplicativa
Original:
returns explanatory string
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(pubblico virtuale membro of std::system_error funzione) [edit]

Inherited from std::runtime_error


Inherited from std::exception

Member functions

[virtuale]
distrugge l'oggetto eccezione
Original:
destructs the exception object
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(pubblico virtuale membro of std::exception funzione) [edit]
[virtuale]
restituisce una stringa esplicativa
Original:
returns an explanatory string
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(pubblico virtuale membro of std::exception funzione) [edit]

[modifica] Esempio

#include <iostream>
#include <fstream>
int main()
{
    std::ifstream f("doesn't exist");
    try {
        f.exceptions(f.failbit);
    } catch (const std::ios_base::failure& e)
    {
        std::cout << "Caught an ios_base::failure.\n"
                  << "Explanatory string: " << e.what() << '\n'
                  << "Error code: " << e.code() << '\n';
    }
}

Output:

Caught an ios_base::failure.
Explanatory string: ios_base::clear: unspecified iostream_category error
Error code: iostream:1

[modifica] Vedi anche

(C++11)
il flusso IO codici di errore
Original:
the IO stream error codes
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(enum) [edit]