[#bsl-vectorBase-08-back-0e]
= xref:bsl.adoc[bsl]::xref:bsl/vectorBase-08.adoc[vectorBase<unsigned int>]::back
:relfileprefix: ../../
:mrdocs:

Return a reference providing non‐modifiable access to the last element in this vector. The behavior is undefined unless this vector is not empty.

== Synopsis

Declared in `<bslstl_vector.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/vectorBase-08/const_reference.adoc[const_reference]
back() const;
----


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