1 detach
脱离当前主线程，*执行，乱序;
2 join()
等待模式，执行完再执行下一个
3 std::this_thread::get_id()
获取当前线程编号
4 std::thread::hardware_concurrency()
检测CPU有多少个核心
1 detach
脱离当前主线程，*执行，乱序;
2 join()
等待模式，执行完再执行下一个
#include <iostream>
#include <thread> void run(int num)
{
std::cout << "hello world" << num << std::endl;
} void main()
{
std::thread *p[]; for (int i = ; i < ; i++)
{
p[i] = new std::thread(run, i);//循环创建线程
//p[i]->join();//等待模式，执行完再执行下一个
p[i]->detach();//脱离当前主线程，*执行，乱序;
} system("pause");
}
1 join()
等待模式，执行完再执行下一个
2 std::this_thread::get_id()
获取当前线程编号
3 std::thread::hardware_concurrency()
检测CPU有多少个核心
#include <iostream>
#include <thread>
#include <windows.h> void msg()
{
MessageBoxA(, "对话框内容", "对话框标题", );//弹出对话框
} void main()
{
auto n = std::thread::hardware_concurrency();//检测CPU有多少个核心
std::cout << n << std::endl; std::cout << "thread=" << std::this_thread::get_id() << std::endl;//获取当前线程编号 std::thread thread1(msg);//创建多线程
std::thread thread2(msg); thread1.join();//开始执行，同时弹出2个对话框
thread2.join(); system("pause");
}
std::vector<std::thread *>threads;//创建一个数组，数组的元素数据类型是std::thread *
threads.push_back(new std::thread(msg));//创建线程，并添加到数组
#include <iostream>
#include <thread>
#include <vector>
#include <windows.h> void msg()
{
MessageBoxA(, "对话框内容", "对话框标题", );//弹出对话框
} void main()
{
std::vector<std::thread *>threads;//创建一个数组，数组的元素数据类型是std::thread * for (int i = ; i < ; i++)
{
threads.push_back(new std::thread(msg));//创建线程，并添加到数组
} for (auto th : threads)//遍历数组
{
th->join();//执行数组中的线程
} system("pause");
}
threads.push_back(new std::thread(msgA, i));//创建线程，并添加到数组，传入参数i，进行通信
#include <iostream>
#include <thread>
#include <vector>
#include <windows.h> void msgA(int num)
{
std::cout << std::this_thread::get_id() << " num=" << num << std::endl;//获取当前线程编号
MessageBoxA(, "对话框内容", "对话框标题", );//弹出对话框
} void main()
{
std::vector<std::thread *>threads;//创建一个数组，数组的元素数据类型是std::thread * for (int i = ; i < ; i++)
{
threads.push_back(new std::thread(msgA, i));//创建线程，并添加到数组，传入参数i，进行通信
} for (auto th : threads)//遍历数组
{
th->join();//执行数组中的线程
} system("pause");
}