15.map映射

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

 //map常规用法
 void main1()
 {
     //映射
     map<char *, int> mymap;
     mymap.insert(pair<char *, int>("司令6", ));
     mymap.insert(pair<char *, int>("司令2", ));
     mymap.insert(pair<char *, int>("司令3", ));
     mymap.insert(pair<char *, int>("司令4", ));
     //第一个字段不允许重复
     mymap.insert(pair<char *, int>("司令4", ));

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

     for (auto cb = mymap.cbegin(), ce = mymap.cend(); cb != ce; cb++)
     {
         cout << (*cb).first << "  " << (*cb).second << endl;
     }

     auto it = mymap.find("司令2");
     //删除一个
     //mymap.erase(it);
     //删除一段
     //mymap.erase(it, mymap.end());
     //链式存储
     //auto ifind = mymap.begin()++;
     //cout << mymap["司令2"] << endl;
     //清空
     mymap.clear();
     cout << it->first << "  " << it->second << endl;
     cin.get();
 }

 struct strless
 {
     //仿函数
     bool operator()(const char *str1, const char *str2)
     {
         //字符串比较
         return (strcmp(str1, str2) < );
     }
 };

 void main()
 {
     //根据strless进行排序插入
     map<char *, int, strless> mymap;
     mymap.insert(pair<char *, int>("司令6", ));
     mymap.insert(pair<char *, int>("司令2", ));
     mymap.insert(pair<char *, int>("司令3", ));
     mymap.insert(pair<char *, int>("司令4", ));

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

     cin.get();
 }