[cpp]
#include <iostream>
using namespace std;
struct Date
{
int year;
int month;
int day;
};
int main()
{
Date date;
cout<<"input year,month,day:";
cin>>date.year>>date.month>>date.day;
int days;
switch(date.month)
{
case 1:
days=date.day;
break;
case 2:
days=date.day+31;
break;
case 3:
days=date.day+59;
break;
case 4:
days=date.day+90;
break;
case 5:
days=date.day+120;
break;
case 6:
days=date.day+151;
break;
case 7:
days=date.day+181;
break;
case 8:
days=date.day+212;
break;
case 9:
days=date.day+243;
break;
case 10:
days=date.day+273;
break;
case 11:
days=date.day+304;
break;
case 12:
days=date.day+334;
break; www.2cto.com
}
if(date.year%4==0 && date.year/100==0 || date.year%400==0)
date.day+=1; www.2cto.com
cout<<date.month<<"月"<<date.day<<"日是"<<date.year<<"年的第"<<days
<<"天."<<endl;
return 0;
}
