日期类设计与实现-优快云博客

本文介绍了一个简单的日期类的设计与实现过程，包括日期合法性检查、闰年判断、日期加一天的功能，并提供了完整的C++代码示例。

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#include <iostream.h>
class Date{
public:
  void Display();
  void AddOneDay();
  void SetDay(int y=0,int m=0,int d=0);
private:
  bool Legal(int y, int m, int d);
  bool IsLeapYear(int y);
  int year;
  int month;
  int day;
};
void Date::SetDay(int y,int m,int d)
{
   year=y>=0;
   month=m>=1&&m<=12?m:0;
   day=d>=1&&d<=31?d:0;
}
void Date::Display()
{
cout<<day<<"/"<<month<<year<<endl;
}
bool Date::IsLeapYear(int y)
  {
   if((y%4==0)&&(y%100!=0)||(y%400==0)&&(y%100==0))
  return 0;
  }

bool Legal(int y, int m, int d)
{
if((y>0)&&(m>0 && m<=12)&&(d>0 && d<=31))

return 0;
}

void Date::AddOneDay()
{
  cout<<"请输入日月年: "<<endl;
  cin>>day>>month>>year;
  cout<<"请输出日月年: "<<endl;
  cout<<day<<"/"<<month<<year<<endl;


if(month==1||month==3||month==5||month==7||month==8||month==10)
{


   if(day<31)
      {day=day++;
   cout<<day<<"/"<<month<<year<<endl;}
   else if(day=31)
   {day=1;
   month=month+1;
      cout<<day<<"/"<<month<<year<<endl;}
   else
   {cout<<"wrong,please try it again!"<<endl;}
}
if(month==4||month==6||month==9||month==11)
{
      if(day<30)
   {day=day++;
      cout<<day<<"/"<<month<<year<<endl;}
   else if(day=30)
   {day=1;
   month=month+1;
      cout<<day<<"/"<<month<<year<<endl;}
   else
   {cout<<"wrong,please try it again!"<<endl;}
}
if(month==2)
{
     if(IsLeapYear(year)==0)
  {
   if(day<29)
   {day=day++;
      cout<<day<<"/"<<month<<year<<endl;
   }
   else if(day=29)
   {day=1;
   month=month+1;
      cout<<day<<"/"<<month<<year<<endl;
   }
   else
   {cout<<"wrong,please try it again!"<<endl;}
  }
  else
  {
   if(day<28)
   {day=day++;
      cout<<day<<"/"<<month<<year<<endl;}
   else if(day=28)
   {day=1;
   month=month+1;
      cout<<day<<"/"<<month<<year<<endl;}
   else
   {cout<<"wrong,please try it again!"<<endl;}
  }

}
if(month==12)

{
   if(day<31)
      {day=day++;
   cout<<day<<"/"<<month<<year<<endl;}
   else if(day=31)
   {day=1;
   month=1;
   year=year+1;
      cout<<day<<"/"<<month<<year<<endl;}
   else
   {cout<<"wrong,please try it again!"<<endl;}
}
}
int main()
{
class Date s;
cout<<"第一次设置日期时间并显示:"<<endl;
s.SetDay();
s.Display();
cout<<"第二次设置日期时间并显示:"<<endl;
s.SetDay(3,11,2007);
s.Display();
s.AddOneDay();
return(0);
}

发表于个人QQ空间( 于2008年10月19日 18:01 )

转载于:https://www.cnblogs.com/babyface/archive/2009/10/15/1584145.html