使用容器管理多个类对象，通过函数启动容器中所有类对象的函数。

#include <iostream>
#include <thread>
#include <vector>
#include <chrono>
#include <memory>class Apple {
public:Apple(int num):workspaceNum(num) {}void start() {flag = true;while (flag && count < 10) {std::cout << "这是线程: " << workspaceNum << std::endl;std::chrono::milliseconds sleeptime(1000);std::this_thread::sleep_for(sleeptime);count++;}}void end(){flag = false;}private:int workspaceNum;bool flag = false;int count = 0;
};class Menu {
public:void addApple(Apple& apple){appleVec.push_back(apple);}void startThread() {for (int i = 0; i< appleVec.size() ; i++){auto threadPtr = std::make_shared<std::thread>([this,i]() {appleVec[i].start();});//智能指针插入到容器中。threads.push_back(threadPtr);}}void joinAllThreads(){for (auto& threadPtr : threads){if (threadPtr->joinable()){threadPtr->join();}}}private:std::vector<Apple> appleVec;std::vector<std::shared_ptr<std::thread>> threads;};int main()
{Apple apple1(1);Apple apple2(2);Menu menu;menu.addApple(apple1);menu.addApple(apple2);menu.startThread();menu.joinAllThreads();return 0;
}