1 #include <string>
2 //老版本的unordered_map(已经废弃不再使用)
3 #include <hash_map>
4 #include <iostream>
5 using namespace std;
6
7
8 void main()
9 {
10 //允许重复的映射
11 hash_map<string, double>mymap{ { "a1",113 },{ "a2",143 },{ "a3",1123 } };
12
13 mymap.insert(pair<string, double>("a4", 345));
14 mymap.insert(pair<string, double>("a4", 315));
15 mymap.insert(pair<string, double>("a4", 325));
16 mymap.insert(pair<string, double>("a4", 335));
17
18
19
20 for (auto i : mymap)
21 {
22 cout << i.first << " " << i.second << endl;
23 }
24
25 cin.get();
26 }
