Namespaces
Variants

std:: make_error_condition (std::errc)

From cppreference.net
< cpp ‎ | error ‎ | errc
C++
Utilities library
Diagnostics library
std::errc
Non-member functions
make_error_condition
Helper classes
Defined in header <system_error>
std:: error_condition make_error_condition ( std:: errc e ) noexcept ;
(since C++11)

Creates an error condition for an errc value e . Sets the error value to int ( e ) and error category to std::generic_category .

Parameters

e - standard error value

Return value

Error condition for e .

Example

Run this code 
#include <iostream>
#include <string>
#include <system_error>
int main()
{
    auto err = std::make_error_condition(std::errc::invalid_argument);
    std::cout << err.message() << '\n';
}

Possible output: 

Invalid argument