[#BloombergLP-bdlt-Datetime-addDaysIfValid]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::xref:BloombergLP/bdlt/Datetime.adoc[Datetime]::addDaysIfValid
:relfileprefix: ../../../
:mrdocs:

Add the specified number of `days` to the value of this object, if the resulting value is in the valid range for a `Datetime` object. Return 0 on success, and a non‐zero value (with no effect) otherwise. Note that this method has no effect on the "time" part of this object. Also note that `days` may be positive, 0, or negative.

== Synopsis

Declared in `<bdlt_datetime.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
addDaysIfValid(int days);
----


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