1 #include <future>
 2 #include<iostream>
 3 #include <thread>
 4 #include <thread>
 5 #include <string>
 6 using namespace std;
 7 
 8 //全局通信變量
 9 promise<string> val;
10 
11 void main()
12 {
13     auto fun1 = []() 
14     {
15         //一直等待,獲取全局變量的值
16         future<string
 
> fu = val.get_future();
17         cout << "Waitting" << endl;
18         cout <<"獲取線程消息" << fu.get() << endl;
19     };
20 
21     auto fun2 = []()
22     {
23         system("pause");
24         //val.set_value("hello");
25         string str1;
26         cin >> str1;
 
27         val.set_value(str1);
28         system("pause");
29     };
30 
31     thread t1(fun1);
32     thread t2(fun2);
33     
34     t1.join();
35     t2.join();
36     system("pause");
37 }

1.future線程通信