=====Multiset Operators=====
Syntax:

<code>
    #include <set>
    multiset& operator=(const multiset& c2);
    bool operator==(const multiset& c1, const multiset& c2);
    bool operator!=(const multiset& c1, const multiset& c2);
    bool operator<(const multiset& c1, const multiset& c2);
    bool operator>(const multiset& c1, const multiset& c2);
    bool operator<=(const multiset& c1, const multiset& c2);
    bool operator>=(const multiset& c1, const multiset& c2);
</code>

All of the C++ containers can be compared and assigned with the standard
comparison operators: ==, !=, <=, >=, <, >, and =. Performing a comparison or
assigning one multiset to another takes [[/complexity|linear time]].

Two multisets are equal if:

  - Their size is the same, and
  - Each member in location i in one multiset is equal to the the member in location i in the other multiset.

Comparisons among multisets are done lexicographically.