# std::operator<<(std::error_code)

From cppreference.com
< cpp‎ | error‎ | error code

Defined in header `<system_error>` |  |
template< class CharT, class Traits > std::basic_ostream<CharT,Traits>& operator<<( basic_ostream<CharT,Traits>& os, const error_code& ec ); |  | (since C++11)

Performs stream output operation on error code `ec`.

Equivalent to os << ec.category().name() << ':' << ec.value.

### Parameters

os | - | output stream to insert data to
ec | - | error code

### Return value

`os`

Retrieved from "http://en.cppreference.com/mwiki/index.php?title=cpp/error/error_code/operator_ltlt&oldid=80333"