### - u -

- uncaught_exception() : exception
- unexpected() : exception
- uninitialized_copy() : stl_uninitialized.h
- uninitialized_copy_n() : ext/memory
- uninitialized_fill() : stl_uninitialized.h
- uninitialized_fill_n() : stl_uninitialized.h
- unique() : stl_algo.h
- unique_copy() : algo.h , stl_algo.h
- unique_copy_switch() : algo.h
- unitbuf() : ios_base.h
- upper_bound() : stl_algo.h
- uppercase() : ios_base.h
- use_facet() : locale_classes.h