#include <iostream>
#include <vector>
#include <string>
// 基类 CTimer
class CTimer {
protected:
    unsigned long timerID;
public:
    CTimer(unsigned long id) : timerID(id) {}
    virtual ~CTimer() {}
    // 纯虚函数，子类必须重载
    virtual std::string GetTimeZone() const = 0;
    unsigned long GetTimerID() const {
        return timerID;
    }
};
// 子类 CBeijingTimer
class CBeijingTimer : public CTimer {
public:
    CBeijingTimer(unsigned long id) : CTimer(id) {}
    virtual ~CBeijingTimer() {}
    // 重载基类的虚函数
    virtual std::string GetTimeZone() const {
        return "Beijing Time";
    }
};
int main() {
    std::vector<CTimer*> timerList;
    // 创建一个北京时间的定时器并添加到列表中
    CTimer* beijingTimer = new CBeijingTimer(1);
    timerList.push_back(beijingTimer);
    // 查询当前所有创建的Timer并打印信息
    std::cout << "Timer List:" << std::endl;
    for (std::vector<CTimer*>::iterator it = timerList.begin(); it != timerList.end(); ++it) {
        std::cout << "Timer ID: " << (*it)->GetTimerID() << ", Time Zone: " << (*it)->GetTimeZone() << std::endl;
    }
    // 清理内存
    for (std::vector<CTimer*>::iterator it = timerList.begin(); it != timerList.end(); ++it) {
        delete *it;
    }
    timerList.clear();

    return 0;
}