[#BloombergLP-bdlsb-FixedMemInput-sungetc]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlsb.adoc[bdlsb]::xref:BloombergLP/bdlsb/FixedMemInput.adoc[FixedMemInput]::sungetc
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Move the current read position back one character if the current read position is not at the beginning of the buffer, and return the character at the resulting current read position from this buffer&period; Return `traits&lowbar;type&colon;&colon;eof()` otherwise&period;

== Synopsis

Declared in `&lt;bdlsb&lowbar;fixedmeminput&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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xref:BloombergLP/bdlsb/FixedMemInput/int_type.adoc[FixedMemInput::int&lowbar;type]
sungetc();
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