Defined in header <ios> | ||
|---|---|---|
enum class io_errc; | (since C++11) |
The scoped enumeration std::io_errc defines the error codes reported by I/O streams in std::ios_base::failure exception objects. Only one error code (std::io_errc::stream) is required, although the implementation may define additional error codes. Because the appropriate specialization of std::is_error_code_enum is provided, values of type std::io_errc are implicitly convertible to std::error_code.
| Enumeration constant | Value |
|---|---|
stream | 1 |
|
(C++11) | constructs an iostream error code (function) |
|
(C++11) | constructs an iostream error_condition (function) |
|
(C++11) | extends the type trait std::is_error_code_enum to identify iostream error codes (class template) |
#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";
if(e.code() == std::io_errc::stream)
std::cout << "The error code is std::io_errc::stream\n";
}
}Output:
Caught an ios_base::failure. The error code is std::io_errc::stream
|
(C++11) | holds a platform-dependent error code (class) |
|
(C++11) | holds a portable error code (class) |
| stream exception (public member class of std::ios_base) |
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