2-2 Time类的定义

#include<iostream>
#include<cstdio>
using namespace std;
class point
{
    private:
    int hour,minute,second;
public:
    int sethour()
    {
        if(hour>12||hour<=0)
            hour=12;
        return hour;
    }
    int setminue()
    {
       if(minute>60||minute<0)
            minute=0;
     return minute;
    }
    int setsecond()
    {
        if(second>60||second<0)
            second=0;
        return second;
    }

    void setpoint( )
    {
        cin>>hour>>minute>>second;
    }
    void showpoint()
    {
       printf("%02d:%02d:%02d\n",hour,minute,second);
    }
};
int main()
{
    class point t;
    t.setpoint();
    t.sethour();
    t.setminue();
    t.setsecond();
    t.showpoint();
    return 0;
}