std::basic_ios::bad

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• Inserção no fluxo de saída por colocar () ou write () falhar por qualquer motivo.

  Original:

  Insertion into the output stream by put() or write() fails for any reason.

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• Inserção no fluxo de saída por operador. <<, std::put_money ou std::put_time, não foi possível concluir, porque o final do fluxo de saída foi alcançado (função A faceta de saída de formatação como num_put::put() ou money_put::put(), devolve uma iteração tal que iter iter.failed()==true)

  Original:

  Insertion into the output stream by operador. <<, std::put_money or std::put_time, could not complete because the end of the output stream was reached (The facet's formatting output function such as num_put::put() or money_put::put(), returns an iterator iter such that iter.failed()==true)

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• Fluxo é construído com um ponteiro nulo para rdbuf (), ou putback () / unget () é chamado em um riacho com um rdbuf nula (), ou um ponteiro nulo passado para operador << (* basic_streambuf)

  Original:

  Stream is constructed with a null pointer for rdbuf(), or putback()/unget() is called on a stream with a null rdbuf(), or a null pointer passed to operator<<(basic_streambuf*)

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• rdbuf () -> sputbackc () ou rdbuf () - Retorna> sungetc () traços :: EOF () para putback () ou unget ()

  Original:

  rdbuf()->sputbackc() or rdbuf()->sungetc() return traits::eof() to putback() or unget()

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• rdbuf () -> pubsync () retorna -1 para sincronizar (), para flush (), ou o destruidor de ostream :: sentinela em um córrego unitbuf

  Original:

  rdbuf()->pubsync() returns -1 to sync(), to flush(), or to the destructor of ostream::sentry on a unitbuf stream

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• Exceção é lançada durante uma operação de I / O por qualquer função de membro do buffer de fluxo associado (por exemplo sbumpc (), xsputn (), sgetc (), overflow (), etc.)

  Original:

  Exception is thrown during an I/O operation by any member function of the associated stream buffer (e.g. sbumpc(), xsputn(), sgetc(), overflow(), etc)

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• Exceção é lançada em iword () ou pword () (por exemplo, std :: bad_alloc)

  Original:

  Exception is thrown in iword() or pword() (e.g. std::bad_alloc)

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[editar] Parâmetros

[editar] Valor de retorno

[editar] Exemplo

#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] Veja também