#include<iostream>
#include<stdio.h>
#include<windows.h>
using namespace std;
int i=0,j=0;
char months[][12]={"none","January","February","March","April","May","June","July","August","September","October","November","December"};
char days[][15]={"none","星期一","星期二","星期三","星期四","星期五","星期六","星期日"};
class date
{
public:
bool isleapyear();
void addday(int days);
void minusday(int day);
int week();
void print();
void renew(int newy,int newm,int newd);
int compare(date &p);
friend class datetime;
int returnday()
{return day;}
private:
int year,month,day;
};
bool date::isleapyear()
{
if((year%4==0)&&(year%100!=0)||(year%400==0))
return true;
return false;
}
void date::print()
{
cout<<year<<"-"<<month<<"-"<<day<<"--"<<months[month]<<"--"<<days[week()]<<endl;
}
void date::minusday(int days)
{
day-=days+j;
while(day<=0)
{
switch(month-1)
{
case 0:
case 1:
case 3:
case 5:
case 7:
case 8:
case 12:
case 10:{month--;day+=31;break;}
case 4:
case 6:
case 9:
case 11:{month--;day+=30;break;}
case 2:
{
if(isleapyear())
{month--;day+=29;break;}
else
{month--;day+=28;break;}
}
}
if(month<1)
{year--;month+=12;}
}
}
void date::addday(int days)
{
day+=days+i;
while(day>=365)
{
if(isleapyear()&&day>365)
{
year++;
day-=366;
}
else
{
year++;
day-=365;
}
}
while(day>31)
{
switch(month)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12: {month++; day-=31;break;}
case 4:
case 6:
case 9:
case 11:{month++;day-=30;break;}
case 2:
{
if(isleapyear())
{month++;day-=29;break;}
else
{month++;day-=28;break;}
}
}
if(month>12)
{year++;month-=12;}
}
i=0;
}
int date::week()
{
long sum=0,i;
for (i=1;i<year;i++)
if (i%4==0&&i%100!=0 || i%400==0)
sum+=366;
else
sum+=365;
switch (month) {
case 12 : sum+=30;
case 11 : sum+=31;
case 10 : sum+=30;
case 9 : sum+=31;
case 8 : sum+=31;
case 7 : sum+=30;
case 6 : sum+=31;
case 5 : sum+=30;
case 4 : sum+=31;
case 3 : if (year%4==0&&year%100!=0||year%400==0)
sum+=29;
else sum+=28;
case 2 : sum+=31;
default : sum+=0;
}
sum+=day-1;
switch (sum%7)
{ /*公元元年一月一号星期一*/
case 0 : return(1);break;
case 1 : return(2);break;
case 2 : return(3);break;
case 3 : return(4);break;
case 4 : return(5);break;
case 5 : return(6);break;
case 6 : return(7);break;
}
}
void date::renew(int newy,int newm,int newd)
{
year=newy;
month=newm;
day=newd;
if(year<0||year>100000||day<0||day>31||month<0||month>12)
{
cout<<"Error Format!!!"<<endl;
exit(1);
}
}
int date::compare(date &p)
{
cout<<"日期大的:";
if(year>p.year)
{print();return 1;}
else
if(year==p.year&&(month>p.month||(month==p.month&&day>p.day)))
{
print();return 1;
}
else if(year==p.year&&month>p.month&&day>p.day)
{cout<<"一样大";
return 0;
}
else
{
p.print();
return 2;
}
}
class timer
{
public:
void print();
void renew(int newh,int newm,int news);
void add(timer &p);
void minus(timer &p);
void compare(timer &p);
friend class datetime;
private:
int hour,minute,second;
};
void timer::renew(int newh,int newm,int news)
{
hour=newh;minute=newm;second=news;
if(hour<0||minute<0||second<0||hour>24||minute>60||second>60)
{
cout<<"Error Format!!!"<<endl;
}
}
void timer::print()
{
int i;
cout<<hour<<":"<<minute<<":"<<second<<endl;
if(hour>12)
{i=hour-12;
cout<<i<<":"<<minute<<":"<<second<<"Pm"<<endl;
}
else
{
i=hour;
cout<<i<<":"<<minute<<":"<<second<<"Am"<<endl;
}
}
void timer::add(timer &p)
{
hour+=p.hour;minute+=p.minute;second+=p.second;
while(second>60)
{
second-=60;
minute++;
}
while(minute>60)
{
minute-=60;
hour++;
}
while(hour>24)
hour-=24;
i++;
}
void timer::minus(timer &p)
{
hour-=p.hour;minute-=p.minute;second-=p.second;
while(second<0)
{
second+=60;
minute--;
}
while(minute<0)
{
minute+=60;
hour--;
}
while(hour<=0)
hour+=24;
j--;
}
void timer::compare(timer &p)
{
if(hour>p.hour)
print();
else if(hour==p.hour&&(minute>p.minute||(minute==p.minute&&second>p.second)))
print();
else
p.print();
}
class datetime
{
public:
datetime(int newy,int newm,int newd,int newh,int newmm,int news);
void renew(int newy,int newm,int newd,int newh,int newmm,int news);
void add(int newy,int newm,int newd,int newh,int newmm,int news);
void compare(datetime &p);
date a;
timer b;
};
datetime::datetime(int newy,int newm,int newd,int newh,int newmm,int news)
{
a.renew(newy,newm,newd);
b.renew(newh,newmm,news);
}
void datetime::renew(int newy=0,int newm=0,int newd=0,int newh=0,int newmm=0,int news=0)
{
a.renew(newy,newm,newd);
b.renew(newh,newmm,news);
}
void datetime::compare(datetime &p)
{
if(a.compare(p.a)==1)
{
cout<<"日期时间比较大的：";
a.print();b.print();
}
else if(a.compare(p.a)==0)
cout<<"日期时间一样大：";
else if(a.compare(p.a)==2)
{
cout<<"日期时间比较大的：";
p.a.print();p.b.print();
}
}
void menu3()
{
cout<<"*********************日期计算*****************************\n"<<endl;
cout<<"**** 1:增加天数与时间 o(∩_∩)o... **** "<<endl;
cout<<"**** 2:减去天数与时间 o(∩_∩)o... **** "<<endl;
cout<<"**** 3:显示日期时间 o(∩_∩)o... **** "<<endl;
cout<<"**** 4:比较日期时间大小 o(∩_∩)o... **** "<<endl;
cout<<"**** 5:重新输入年份 o(∩_∩)o... **** "<<endl;
cout<<"**** 6:退出 o(∩_∩)o... **** "<<endl;
cout<<"**** 0:初始化为系统时间 o(∩_∩)o... **** "<<endl;
cout<<"**********************************************************"<<endl;
}
void main()
{
datetime a(0,0,0,0,0,0),b(0,0,0,0,0,0);
int year,month,day,hour,minute,second,i;
SYSTEMTIME sys;
GetLocalTime(&sys);
cout<<"请首先输入初始日期时间："<<endl;
cin>>year>>month>>day>>hour>>minute>>second;
a.renew(year,month,day,hour,minute,second);
cout<<"您输入日期时间为"<<endl;
a.a.print();a.b.print();
menu3();
while(1)
{
cin>>i;
switch(i)
{
case 0:
a.renew(sys.wYear,sys.wMonth,sys.wDay,sys.wHour,sys.wMinute,sys.wSecond);
cout<<"系统当前日期时间为"<<endl;
a.a.print();a.b.print();
menu3();
break;
case 1:
{
cout<<"请输入要增加的天数与时间"<<endl;
cin>>day>>hour>>minute>>second;
b.renew(0,0,day,hour,minute,second);
a.b.add(b.b);
a.a.addday(b.a.returnday());
a.a.print();a.b.print();
break;
}
case 2:
{
cout<<"请输入要减去的天数与时间:"<<endl;
cin>>day>>hour>>minute>>second;
b.renew(0,0,day,hour,minute,second);
a.b.minus(b.b);
a.a.minusday(b.a.returnday());
a.a.print();a.b.print();
break;
}
case 3:
{
a.a.print();a.b.print();break;
}
case 4:
{
cout<<"请输入要比较日期时间"<<endl;
cin>>year>>month>>day>>hour>>minute>>second;
b.renew(year,month,day,hour,minute,second);
a.compare(b);break;
}
case 5:
{
system("cls");
cout<<"请重新输入日期时间"<<endl;
cin>>year>>month>>day>>hour>>minute>>second;
a.renew(year,month,day,hour,minute,second);
cout<<"您输入日期时间为"<<endl;
a.a.print();a.b.print();
menu3();
break;
}
case 6:
cout<<"再见谢谢使用本系统(*^__^*) 嘻嘻……"<<endl;
exit(0);
}
}
}
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