4.自定义线程

#include <iostream>
#include <thread>
#include <cstdlib>
#include <iostream>
using namespace std;

class mythread :public thread
{
public:
    mythread() :thread()
    {

    }

    //class 模板,...Args可变模板
    template<class T,class...Args>             //调用类的构造函数,参数是一个函数模板,类对象作为参数
    mythread(T &&func, Args &&...args) : thread(forward<T>(func), forward<T>(args)...)
    {

    }

    void show()
    {
        cout << "hello" << endl;
    }

    void run(const char *cmd)
    {
        system(cmd);
    }
};

void main()
{
    mythread t1([]() { cout << "hello1"; });
    mythread t2([]() { cout << "hello13"; });
    t1.show();
    t1.run("calc");
    cin.get();
}