#include
using namespace std;
int nyear(int year)//判断是平年，还是润年
{
if(year%400==0||(year%4==0&&year%100!=0))
return 366;
else
return 365;
}
int nmonth(int m,int y) //根据年份和月份，判断是那一个月的天数
{
if(m==1||m==3||m==5||m==7||m==8||m==10||m==12)
return 31;
else if(nyear(y)==366&&m==2)
return 29;
else if(nyear(y)==365&&m==2)
return 28;
else
return 30;
}
int main()
{
int n,d,y,m;
cout<<"1900.1.1 monday"< cout cin>>n;
y=1900;m=1;d=1;
d=n%7;
string N[7]={"monday","monday","wednesday","thursday","friday","saturday","sunday"};
while(n>=365+nyear(y))
{
n=n-365-(nyear(y)-365);
y++;
}
while(n>=nmonth(m,y))
{
n-=nmonth(m,y);
m++;
}
cout<<y<<"."<<m<<"."<<n+1<<" "<<N[d];
system("pause");
return 0;
}
m++;
后面加上
y+= m / 12;
m = m % 12;