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      std::basic_ifstream::is_open

      De cppreference.com

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      <metanoindex/>

       
      C++
       
      De entrada / saída da biblioteca
      I / O manipuladores
      C estilo de I / O
      Buffers
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      Buffers
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      (obsoleta)
      Streams
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      Streams
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      Abstrações
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      Abstractions
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      File I / O
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      File I/O
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      Cordas I / O
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      String I/O
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      Tipos
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      Error category interface
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      (C++11)
      (C++11)
       
      std::basic_ifstream
      Funções de membro
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      Member functions
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      basic_ifstream::basic_ifstream
      basic_ifstream::operator=(C++11)
      basic_ifstream::swap(C++11)
      basic_ifstream::rdbuf
      Operações de arquivo
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      File operations
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      basic_ifstream::is_open
      basic_ifstream::open
      basic_ifstream::close
      Não-membros funções
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      Non-member functions
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      basic_ifstream::swap(std::basic_ifstream)(C++11)
       
      <tbody> </tbody>
      bool is_open() const;
      Verifica se o fluxo de arquivo tem um arquivo associado.
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      Checks if the file stream has an associated file.
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      Efetivamente chama rdbuf()->is_open().
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      Effectively calls rdbuf()->is_open().
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      Parâmetros

      (Nenhum)
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      (none)
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      Valor de retorno

      true se o fluxo de arquivo tem um arquivo associado, false contrário
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      true if the file stream has an associated file, false otherwise
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      Exemplo

      Esta seção está incompleta
      Motivo: sem exemplo

      Veja também
      abre um arquivo e associa com o fluxo
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      opens a file and associates it with the stream
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      (função pública membro) [edit]
      fecha o arquivo associado
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      closes the associated file
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      (função pública membro) [edit]