3.24

#include<iostream> using namespace std;class Date {     private: int year,y;int month,m;int day,d;public:Date(int y,int m,int d){   year=y;month=m;day=d;}Date(){}void setDate(int o,int p,int q){year=o;month=p;day=q;}void getYear(){cout<<"该年是:"<<year<<"年"<<endl;}void getMonth(){cout<<"该月是:"<<month<<"月"<<endl;}void getDay(){cout<<"该日是:"<<day<<"日"<<endl;cout<<"-----------------------------"<<endl;}void printDate(){cout<<"日期是:"<<year<<"年"<<month<<"月"<<day<<"日"<<endl;} }; int main() {Date d1(2010,6,8);d1.printDate();d1.getYear();d1.getMonth();d1.getDay();  Date d2;     d2.setDate(2011,3,28);d2.getYear();d2.getMonth();d2.getDay();Date d3(d1);d3.getYear();d3.getMonth();d3.getDay();return 0; }