#include<iostream>
using namespace std;
class date
{
public:
date(int y=2010,int m=2,int d=14)
{
year=y;
month=m;
day=d;
}
void print()
{
cout<<"今年是"<<year<<"年"<<month<<"月"<<day<<"日"<<endl;
}
private:
int year;
int month;
int day;
};
int main()
{
date A;
A.print();
date B(2011);
B.print();
date C(2010,9);
C.print();
date D(2010,10,1);
D.print();
return 0;
}

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