自治日历

#include
#include
using namespace std;
class Date{
public:
Date()
{
cout<<"请输入你要查找的日期(年月日中间空格隔开,比如: 2020 5 21): ";
string s;
getline(cin,s);
stringstream ss;
ss<<s;
int year,month,day;
ss>>year>>month>>day;
if(year<1902||month>12||month<1||day<1||day>GetMonthDay(year,month))
{
cout<<“你输入的日期不合法,或者年份超出了下限(1902),系统将还原默认时间 (1902/1/1)”<<endl;
_year=1902;
_month=1;
_day=1;
}
_year=year;
_month=month;
_day=day;
}
Date (const Date& d)
{
_year=d._year;
_month=d._month;
_day=d._day;
}
~Date()
{}

void printfDate()
{
string weekend[7] ={“日”,“一”,“二”,“三”,“四”,“五”,“六”};
cout<<“今天是: “<<_year<<“年”<<_month<<“月”<<_day<<“日”<<“星期”<<weekend[week(_year,_month,_day)]<<endl;
cout<<“日”<<” “<<“一”<<” “<<“二”<<” " <<“三”<<” “<<“四”<<” “<<“五”<<” “<<“六”<<endl;
int fw=week(_year,_month,1);
for(int i=0;i<fw;i++)
{
cout<<” “;
cout<<” “;
}
int day=1;
for(int i=fw;i<7;i++)
{
cout<<” “<<day<<” “;
day++;
}
cout<<endl;
int k=0;
for(;day<=GetMonthDay(_year,_month);day++)
{
if(day<10)
{
cout<<” “<<day<<” “;
}
else
cout<<day<<” ";
k++;
if(k7)
{
cout<<endl;
k=0;
}
}
cout<<endl;
}
private:
int _year;
int _month;
int _day;
int GetMonthDay(int year,int month)
{
int arr[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
if((year%40&&year%100!=0)||year%4000)
{
arr[2]=29;
}
return arr[month];
}
int week(int year,int month,int day)
{
int days=0;
for(int i=1900;i<year;++i)
{
if((i%40&&i%100!=0)||i%400==0)
{
days+=366;
}
else
days+=365;
}
for(int i=1;i<month;i++)
{
days+=GetMonthDay(year,i);
}
days+=day;
return days%7;
}
};
int main()
{
while(1)
{
Date d;
d.printfDate();
}
}