c++多個線程操作與互斥

典型的c++的賣票程序，看代碼即可明白：

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


static int ticket = 100;
mutex mytmx;

void sellticket()
{
	while (ticket >= 0)
	{
		if (mytmx.try_lock())
		{
			cout << ticket << endl;
			ticket--;
			mytmx.unlock();
		}
		
	}
}
int main()
{
	

	const int group = 3;
	thread mythread[group];
	for (int i = 0; i < 3; i++)
	{

		mythread[i] = thread(sellticket);
	}
	for (int i = 0; i < 3; i++)
	{
		mythread[i].join();
	}
	
	return 0;
}