[#OPENSSL_sk_pop]
= OPENSSL&lowbar;sk&lowbar;pop
:mrdocs:

Remove and return the last element of a stack&period;

== Synopsis

Declared in `&lt;openssl&sol;stack&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void*
OPENSSL&lowbar;sk&lowbar;pop(xref:OPENSSL_STACK.adoc[OPENSSL&lowbar;STACK]* st);
----

== Return Value

Former top element, or NULL if `st` is empty&sol;NULL&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *st*
| Stack to modify&period;
|===


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