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std::system_error::system_error - cppreference.com

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system_error( std::error_code ec );

 (1) (dal C++11)

system_error( std::error_code ec, const std::string& what_arg );

 (2) (dal C++11)

system_error( std::error_code ec, const char* what_arg );

 (2) (dal C++11)

system_error( int ev, const std::error_category& ecat

 (3) (dal C++11)

system_error( int ev, const std::error_category& ecat, const std::string& what_arg);

 (4) (dal C++11)

system_error( int ev, const std::error_category& ecat, const char* what_arg);

 (4) (dal C++11)

Costruisce nuovo oggetto errore di sistema.

Original:

Constructs new system error object.

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1)

Costrutti con ec codice di errore

Original:

Constructs with error code ec

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2)

Costrutti con ec codice di errore e la stringa what_arg spiegazione. La stringa restituita da what() è garantito per contenere what_arg.

Original:

Constructs with error code ec and explanation string what_arg. The string returned by what() is guaranteed to contain what_arg.

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3)

Costrutti con ev sottostante il codice di errore e la categoria di errore associato ecat.

Original:

Constructs with underlying error code ev and associated error category ecat.

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4)

Costrutti con ev sottostante il codice di errore, associato ecat categoria di errore e what_arg stringa esplicativa. La stringa restituita da what() è garantito per contenere what_arg.

Original:

Constructs with underlying error code ev, associated error category ecat and explanatory string what_arg. The string returned by what() is guaranteed to contain what_arg.

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Parametri

ec -

codice di errore

Original:

error code

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ev -

codice di errore nella codifica di base

Original:

error code in base encoding

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ecat -

la categoria di errore

Original:

the category of error

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what_arg -

stringa esplicativa

Original:

explanatory string

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Esempio

Viene illustrato come creare un'eccezione system_error da un valore errno

Original:

Demonstrates how to create a system_error exception from a errno value

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#include <iostream>
#include <system_error>

int main()
{
    try
    {
        throw std::system_error(EDOM, std::system_category());
    }
    catch (const std::system_error& error)
    {
        std::cout << "Error: " << error.code()
                  << " - " << error.code().message() << '\n';
    }
}

Output: 

Error: system:33 - Numerical argument out of domain