类和对象

time.h

#include<iostream>
using namespace std;
class Time {
private:
    int hour;
    int minute;
    int second;
public:
    void showtime();
    Time(int h = 0, int m = 0, int s = 0);
    Time(Time& t)
    {
        hour = t.hour; minute = t.minute; second = t.second;
    }
};

time.cpp

#include"time.h"
void Time::showtime()
{
    cout << hour << " " << minute << " " << second << endl;
}
Time::Time(int h,int m,int s) {
        hour = h; minute = m; second = s;
}

源.cpp

 

#include"time.h"
Time& fuzhi(Time& timee)
{
    return timee;
}
Time* fuzhi(Time* timee)
{
    return timee;
}
int main()
{
    Time time1;
    time1.showtime();
    Time* time2 = new Time(1, 1, 1);
    time2->showtime();
    Time time2_ = fuzhi(*time2);
    time2_.showtime();
    delete time2;
    Time& time3 = *new Time(time1);
    time3.showtime();
    Time time3_ = *fuzhi(&time3);
    time3_.showtime();
    delete& time3;
}