【项目】日期时间类
定义一个日期类Date,数据成员包括年、月、日,SetDate(int y,int m,int d)和PrintDate()函数分别用于设置日期和显示日期;再定义一个时间类Time,数据成员包括时、分、秒,SetTime(int h,int m,int s)和PrintTime()函数分别用于设置时间和显示时间,在此基础上再定义一个日期时间类TimeDate,充分利用已有的两个类中提供的方法,实现日期和时间的设置和显示。请实现类TimeDate,下面是用于测试的主函数及参考运行结果。
int main() { TimeDate dt_a,dt_b(2010,4,16,9,30,0); cout<<"dt_a: "; dt_a.PrintDate_Time(); cout<<endl; cout<<"dt_b: "; dt_b.PrintDate_Time(); dt_a.SetTime(20,00,00); dt_a.SetDate(2008,8,7); cout<<endl; cout<<"dt_after uptate: "; dt_a.PrintDate_Time(); return 0; }
[参考解答]
#include<iostream> using namespace std; class Date { public: void SetDate(int y,int m,int d) { Year=y; Month=m; Day=d; } void PrintDate() { cout<<Year<<"/"<<Month<<"/"<<Day; } Date():Year(0),Month(0),Day(0) {} Date(int y,int m,int d):Year(y),Month(m),Day(d) {} private: int Year,Month,Day; }; class Time { public: void SetTime(int h,int m,int s) { Houre=h; Minutes=m; Seconds=s; } void PrintTime() { cout<<Houre<<":"<<Minutes<<":"<<Seconds; } Time():Houre(0),Minutes(0),Seconds(0) {} Time(int h,int m,int s):Houre(h),Minutes(m),Seconds(s) {} private: int Houre,Minutes,Seconds; }; class TimeDate: public Date,public Time { public: TimeDate():Date(),Time() {}; TimeDate(int y,int mo,int d,int h,int mi,int s): Date(y,mo,d),Time(h,mi,s) {} void PrintDate_Time() { PrintDate(); cout<<" "; PrintTime(); } }; int main() { TimeDate dt_a,dt_b(2010,4,16,9,30,0); cout<<"dt_a: "; dt_a.PrintDate_Time(); cout<<endl; cout<<"dt_b: "; dt_b.PrintDate_Time(); dt_a.SetTime(20,00,00); dt_a.SetDate(2008,8,7); cout<<endl; cout<<"dt_after uptate: "; dt_a.PrintDate_Time(); return 0; }
时间: 2024-12-25 02:59:19