16.允许重复的multimap

 #include <iostream>
 #include <map>
 #include <cstring>
 using namespace std;

 void main()
 {
     multimap<char *, int>mymap;
     mymap.insert(pair<char *, int>("司令1", ));
     mymap.insert(pair<char *, int>("司令1", ));
     mymap.insert(pair<char *, int>("司令3", ));
     mymap.insert(pair<char *, int>("司令4", ));
     mymap.insert(pair<char *, int>("司令5", ));

     for (auto i : mymap)
     {
         cout << i.first << " " << i.second << endl;
     }

     auto it = mymap.equal_range("司令1");
     for (auto ib = it.first, ie = it.second; ib != ie; ib++)
     {
         cout << (*ib).first << "  " << (*ib).second << endl;
     }
     cin.get();
 }