21 Internet protocol [internet]

21.5 Class ip::address_v4 [internet.address.v4]

21.5.7 ip::address_v4 I/O [internet.address.v4.io]

template<class CharT, class Traits> basic_ostream<CharT, Traits>& operator<<( basic_ostream<CharT, Traits>& os, const address_v4& addr);

1

Returns: os << addr.to_string().c_str().