28.lambda表达式与多线程

 #include <iostream>
 #include <thread>
 #include <Windows.h>
 #include <chrono>
 using namespace std;

 void main()
 {
     //获取线程id
     thread th1([]() {
         //等待
         this_thread::sleep_for(chrono::seconds());
         //让CPU先执行其他线程,空闲的时候再执行
         this_thread::yield();
         cout << this_thread::get_id();
         //到某个时刻到来之前一直等待
         //this_thread::sleep_until();
     });
     thread th2([]() {MessageBoxA(, "", "", ); });

     cin.get();
 }