25.C++多线程

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

 void run()
 {
     MessageBoxA(, "", "", );
 }

 void showmsg(const char *str1,const char *str2)
 {
     MessageBoxA(, str1, str2, );
 }

 void main()
 {
     ////栈上开辟
     ////并行,异步,非阻塞
     //thread t1(run);
     //thread t2(run);

     //thread t[2]{ thread(run),thread(run) };

     ////堆上开辟
     //thread *pthread(new thread(run));

     //多线程传递参数
     thread th1(showmsg, "", "");
     thread th2(showmsg, "", "");
     thread th3(showmsg, "", "");

     cin.get();
 }