:relfileprefix: ../../
[#boost-urls-operator_lshift-0a]

== xref:boost.adoc[pass:[boost]]::xref:boost/urls.adoc[pass:[urls]]::operator<<


Format the address to an output stream.


=== Synopsis

Declared in header `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/ipv4_address.hpp#L335[boost/url/ipv4_address.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
std::ostream&
operator<<(
    std::ostream& os,
    xref:boost/urls/ipv4_address.adoc[ipv4_address] const& addr);
----

=== Description


IPv4 addresses written to output streams
are written in their dotted decimal format.

Format the address to an output stream.

IPv4 addresses written to output streams
are written in their dotted decimal format.





=== Parameters

|===
| Name | Description 

| *os*
| 
The output stream.

| *addr*
| 
The address to format.

| *os*
| 
The output stream.

| *addr*
| 
The address to format.

|===