#include <mutex>

多线程初级

 #include <iostream>
 #include <thread>
 #include <windows.h>
 #include <mutex>

 //两个线程并行访问一个变量

 int g_num = ;//找到或者找不到的标识
 std::mutex g_mutex;

 void goA(int num)
 {
     g_mutex.lock();//你访问的变量，在你访问期间，别人访问不了

     for (int i = ; i < ; i++)
     {
         Sleep();
         g_num = ;//修改全局变量
         std::cout << "线程" << num << "   " << g_num << std::endl;
     }

     g_mutex.unlock();//解锁
 }

 void goB(int num)
 {
     for (int i = ; i < ; i++)
     {
         Sleep();
         g_num = ;//修改全局变量
         std::cout << "线程" << num << "   " << g_num << std::endl;
     }
 }

 void main()
 {
     std::thread t1(goA, );
     std::thread t2(goB, );
     t1.join();
     t2.join();

     std::cin.get();
 }