第三章作业 3.24

#include<iostream>
using namespace std;
class Date
{
public:
void printdate()
{
cout<<year<<"."<<month<<"."<<day<<endl;
}
void Getyear()
{
cout<<"year"<<"="<<year<<endl;
}
void Getmonth()
{
cout<<"month"<<"="<<month;
cout<<endl;
}
void Getday()
{
cout<<"day"<<"="<<day<<endl;
}
void setday(int a,int b, int c)
{
year=a;
month=b;
day=c;
}
Date(int m1,int n1,int p1)
{
year=m1;
month=n1;
day=p1;
}
Date(const Date &q)
{	year=q.year;
month=q.month;
day=2*q.day;
}
Date()
{
}

private:
int year;
int month;
int day;
};
int main()
{
Date d1(2015,3,17);
d1.printdate();
d1.Getyear();
d1.Getmonth();
d1.Getday();
Date d2;
d2.setday(2015,3,18);
d2.printdate();
d2.Getyear();
d2.Getmonth();
d2.Getday();
Date d3(d1);
d3.printdate();
d3.Getyear();
d3.Getmonth();
d3.Getday();
return 0;
}