[#bsl-basic_stringbuf-sungetc]
= xref:bsl.adoc[bsl]::xref:bsl/basic_stringbuf.adoc[basic_stringbuf]::sungetc
:relfileprefix: ../../
:mrdocs:

Moving backwards in the input stream.

== Synopsis

Declared in `<bslstl_stringbuf.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int_type
sungetc();
----

== Description

If a putback position is available, this function decrements the input pointer and returns that character. Otherwise, calls and returns pbackfail(). The effect is to _unget_ the last character _gotten._

== Return Value

The previous character, if possible.


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