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#include <iostream> using namespace std; class Data { public:     Data(int y = 0, int m = 0, int d = 0);     void setYear(int y);     void setMonth(int m);     void setDay(int d);     int GetYear();     int GetMonth();     int GetDay();     void display(); private:     int year;     int month;     int day; }; inline Data::Data(int y /* = 0 */, int m /* = 0 */, int d /* = 0 */) {     if (y < 0)     {         y = 0;     }     if (m < 0 || m >= 13)     {         m = 0;     }     if (d < 0 || d > 31)     {         d = 0;     }     year = y;     month = m;     day = d; } inline void Data::setYear(int y) {     year = y; } inline void Data::setMonth(int m) {     month = m; } inline void Data::setDay(int d) {     day = d; } inline int Data::GetYear() {     return year; } inline int Data::GetMonth() {     return month; } inline int Data::GetDay() {     return day; } inline void Data::display() {     cout << year << "_" << month << "_" << day ; } /****************************************************/ class Time { public:     Time(int h = 0, int m = 0, int s = 0);     void setHour(int y);     void setMin(int m);     void setSec(int d);     int GetHour();     int GetMin();     int GetSec();     void display(); private:     int hour;     int minute;     int second; }; inline Time::Time(int h /* = 0 */, int m /* = 0 */, int s /* = 0 */) {     hour = h;     minute = m;     second = s; } inline void Time::setHour(int h) {     hour = h; } inline void Time::setMin(int m) {     minute = m; } inline void Time::setSec(int s) {     second = s; } inline int Time::GetHour() {     return hour; } inline int Time::GetMin() {     return minute; } inline int Time::GetSec() {     return second; } inline void Time::display() {     cout << hour << ":" << minute << ":" << second ; } /*****************************************************/ class DataAndTime: public Data, public Time { public:     DataAndTime(int y = 0, int m = 0, int d = 0, int hour = 0, int min = 0, int sec = 0);     void display(); }; inline DataAndTime::DataAndTime(int y/* = 0*/, int m/* = 0*/, int d/* = 0*/, int hour/* = 0*/, int min/* = 0*/, int sec/* = 0*/) :Data(y, m, d), Time(hour, min, sec) { } inline void DataAndTime::display() {     Data::display();     cout << " " ;     Time::display(); } /****************************************************/ int main() {     DataAndTime dandt(2006, 11, 13, 13, 25, 38);     dandt.display();     cout << endl;     cout << dandt.GetYear() << endl;     cout << dandt.GetSec() << endl;     dandt.setYear(1985);     dandt.setMin(33);     dandt.setSec(133);     dandt.display();     cout << "end test";     return 0; }

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