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      std::ios_base::failure

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      < cpp‎ | io‎ | ios base

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      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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      Array I/O
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      Tipos
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      Types
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      Interface de categoria de erro
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      Error category interface
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      (C++11)
      (C++11)
       
      ios_base::failure
      Funções de membro
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      Member functions
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      failure::failure
       
      Definido no cabeçalho <ios>
      class failure;
      O std::ios_base::failure classe define um objeto de exceção que é acionada em caso de falha as funções na entrada / saída da biblioteca.
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      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
      Sobre esta imagem

      Inheritance diagram (até C++11)

      cpp/error/exceptioncpp/error/runtime errorcpp/error/system errorstd-ios base-failure-inheritance.svg
      Sobre esta imagem

      Inheritance diagram (desde C++11)

      Índice

      [editar]Funções de membro

      constrói o objeto de exceção
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      constructs the exception object
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      (função pública membro)[edit]

      Herdado de std::system_error

      Member functions

      retorna código de erro
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      returns error code
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      (of std::system_error função pública membro)[edit]
      [virtual]
      Retorna a string explicativo
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      returns explanatory string
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      (of std::system_error função pública virtual membro)[edit]

      Herdado de std::runtime_error


      Herdado de std::exception

      Member functions

      [virtual]
      destrói o objeto de exceção
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      destructs the exception object
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      (of std::exception função pública virtual membro)[edit]
      [virtual]
      retorna uma cadeia explicativa
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      returns an explanatory string
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      (of std::exception função pública virtual membro)[edit]

      [editar]Exemplo

      #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';}}

      Saída: 

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

      [editar]Veja também

      (C++11)
      O erro de IO códigos de fluxo
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      the IO stream error codes
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      (enum)[edit]
      Obtida de "https://pt.cppreference.com/mwiki/index.php?title=cpp/io/ios_base/failure&oldid=20791"
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