STL MAP 使用

 1         multimap<string, string> mmpSS = { { "i", "good" }, { "i", "bad" }, { "you", "good" }, { "you", {"bad"} } };
 2         //根据count的数量 
 3         auto num = mmpSS.count("i");
 4         auto it = mmpSS.find("i");
 5         while (num)        
 6         {
 7             cout << it->second<<endl;
 8             it++;
 9             num--;
10         }
11         //根据iterator区间
12         auto ip = mmpSS.equal_range("you");
13         for (auto i = ip.first; i != ip.second ; i++)
14         {
15             cout << i->second << endl;
16         }