1 #include <map>
 2 #include <iostream>
 3 
 4 //pair使用头文件iostream
 5 
 6 using namespace std;
 7 
 8 int main()
 9 {
10      map<int , string>  myMap;
11 
12      pair<int , string>  myPair(1,"mypair");     
13 
14      myMap.insert(myPair);//插入
15 
16      myMap.insert(pair<int,string>(2,"king"));//插入
17 
18      myMap.insert({3,"hello"});//插入
19 
20      myMap[6] = "world" ;//插入
21     
22      map<int,string>::iterator   iter ;
23      
24      for(iter = myMap.begin();iter != myMap.end();iter ++)
25      {
26            cout << iter -> first << "------";
27            cout << iter -> second << endl;
28      }
29 }