[#bsl-stack-05-top-034]
= xref:bsl.adoc[bsl]::xref:bsl/stack-05.adoc[stack]::top
:relfileprefix: ../../
:mrdocs:

Return a reference to the element at the top of this stack. The behavior is undefined if this stack is empty.

== Synopsis

Declared in `<bslstl_stack.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
CONTAINER::reference
top();
----


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