c++的最基础的类和对象

#include<iostream>using namespace std;class Clock{public:void setTime(int newH=0, int newM=0, int newS=0);void showTime();private:int hour, minute, second;};void Clock::setTime(int newH, int newM, int newS){hour = newH;minute = newM;second = newS;}void Clock::showTime(){cout << hour << ":" << minute << ":" << second << endl;}int main(){Clock myClock;cout << "First time set and output:" << endl;myClock.setTime();myClock.showTime();cout << "Second time set and output:" << endl;myClock.setTime(8, 30, 30);myClock.showTime();return 0;}