dateandtime.ppc.txt

本文给出一个关于继承性的综合例子

#include 
#include 
#include 
typedef char string80[80];

class Date
{
　public:
　Date() {}
　Date(int y, int m, int d) { SetDate(y, m, d); }
　void SetDate(int y, int m, int d)
　{
　　Year = y;
　　Month = m;
　　Day = d;
　}
　void GetStringDate(string80 &Date)
　{
　　sprintf(Date, "%d/%d/%d", Year, Month, Day);
　}
　protected:
　　int Year, Month, Day;
};

class Time
{
　public:
　Time() {}
　Time(int h, int m, int s) { SetTime(h, m, s); }
　void SetTime(int h, int m, int s)
　{
　Hours = h;
　Minutes = m;
　Seconds = s;
　}
void GetStringTime(string80 &Time)
{
　sprintf(Time, "%d:%d:%d", Hours, Minutes, Seconds);
}
　protected:
　int Hours, Minutes, Seconds;
};

class TimeDate:public Date, public Time
{
　public:
　TimeDate():Date() {}
　TimeDate(int y, int mo, int d, int h, int mi, int s):Date(y, mo, d), 　Time(h, mi, s) {}
　void GetStringDT(string80 &DTstr)
　{
　　sprintf(DTstr, "%d/%d/%d;%d:%d:%d", Year, Month, Day, Hours, Minutes, Seconds);
　}
};

void main()
{
　TimeDate date1, date2(1998, 8, 12, 12, 45, 10);
　string80 DemoStr;
　date1.SetDate(1998, 8, 7);
　date1.SetTime(10, 30, 45);
　date1.GetStringDT(DemoStr);
　cout<<"The date1 date and time is:"<<date1.GetStringDate(DemoStr);
　cout<<"The date1 date is:"<<date1.GetStringTime(DemoStr);
　cout<<"The date1 time is:"<<date2.GetStringDT(DemoStr);
　cout<<"The date2 date and time is:"<<
}