Specifies the behavior of unscoped variables in a parallel region.
shared, which is in effect if the default clause is not specified, means that any variable in a parallel region will be treated as if it were specified with the shared (OpenMP) clause. none means that any variables used in a parallel region that are not scoped with the private (OpenMP), shared (OpenMP), reduction, firstprivate, or lastprivate clause will cause a compiler error.
default applies to the following directives:
For more information, see 188.8.131.52 default.