numpunct::numpunct

explicit numpunct (size_t refs=0);

Constructs a numpunct facet object.

Calls the constructor of its base class locale::facet.

Parameters

refs

0 (zero) if the object has to be automatically destroyed when the last locale containing that facet is destroyed, or 1 (one) if it will be explicitly deleted.
size_t is an unsigned integral type.