#include<iostream> #include<string> #include<ctime> using namespace std;//時間類class Time{private:    int hour;    int minute;    int second;public:    //設置時間    void set(int h,int m,int s){        hour = h;        minute = m;        second = s;    }    //時間走一秒,時分秒的變化情況    void next(){        if(second<59)            second++;        else if(minute<59){            second=0;            minute++;}        else if(hour<23){            minute=0;            hour++;}        else            hour=0;    }    //得到時間    int get(){        return hour*10000+minute*100+second;    }};//時鐘類class Clock{private:    Time now;    Time ring_time;public:    //對表，設定初始時間    void adjust_now(int h,int m,int s){        now.set(h,m,s);        cout<<"現在的時間是："<<h<<"時"<<m<<"分"<<s<<"秒"<<endl;    }    //設定鬧鈴時間    void adjust_ring(int h,int m,int s){        ring_time.set(h,m,s);        cout<<"鬧鈴時間是："<<h<<"時"<<m<<"分"<<s<<"秒"<<endl;    }    //時間過一秒    void tick(){        long int old=time(0);        while(time(0)==old)            ;        now.next();    }    //顯示當前時間    void showtime(){        cout<<now.get()<<endl;    }    //時鐘開始走時,等到了鬧鈴時間，開始響    void run(){        do{            tick();            showtime();            if(now.get()>=ring_time.get())                cout<<'/a';        }while(1);    }};int main(){    Clock c;    c.adjust_now(18,35,40);     //起始時間    c.adjust_ring(18,35,45);    //鬧鈴時間    c.run();}