multiset « set multiset « C++ Tutorial

19.10.1.Add elements into an integer set and output all added elements
19.10.2.Assign elements to another multiset with ascending order
19.10.3.Initializing Associative Containers
19.10.4.Modify or Remove a Value in a Set or Multiset
19.10.5.Use std::copy to print all elements in a multiset
19.10.6.Define multiset< int, less< int > >