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std::make_error_code(std::io_errc)

STD：使[医]误差[医]代码%28std：：io[医]ERRC%29

Defined in header ​​
std::error_code make_error_code( std::io_errc e ​(since C++11)

构造一个std::error_code从类型的值中提取std::io_errc好像returnstd::error_code(static_cast<int>(e),std::iostream_category())的构造函数调用此函数。std::error_code当给一个std::io_errc争论。

参数

e-error code number

返回值

类型值std::error_code保存错误代码号的e与错误类别关联"iostream"...

例外

noexcept规格：

noexcept

例

二次

#include <iostream>
#include <system_error>
int main()
{
    std::error_code ec = std::make_error_code(std::io_errc::stream
    std::cout << "Error code from io_errc::stream has category "
              << ec.category().name() << '\n';
}

二次

产出：

二次

Error code from io_errc::stream has category iostream

二次

另见

error_code (C++11)holds a platform-dependent error code (class)
io_errc (C++11)the IO stream error codes (enum)

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