[#subprocess-input-2constructor-09]
= xref:subprocess.adoc[subprocess]::xref:subprocess/input.adoc[input]::input
:relfileprefix: ../../
:mrdocs:

Uses the descriptor of an open FILE stream as the child's input.

== Synopsis

Declared in `<util/subprocess.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
explicit
input(FILE* fp);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *fp*
| Open FILE stream whose descriptor is used.
|===


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