确定某年某月某天是该年的第几天

来源：互联网发布：步人甲知乎编辑：程序博客网时间：2024/05/17 01:21

#include <iostream>

using namespace std;

struct Date{
int year;
int month;
int day;
};
int main()
{
Date d;
cin>>d.year>>d.month>>d.day;
int temp;
if(d.year%4==0||d.year%400==0&&d.year%100!=0)
temp=0;
else
temp=1;
int days;
switch(d.month)
{
case 1:days=d.day;break;
case 2:days=31+d.day;break;
case 3:
if(temp==0)
{
days=31+29+d.day;
}
else
days=31+28+d.day;break;
case 4:
if(temp==0)
{
days=31+29+31+d.day;
}
else
days=31+28+31+d.day;break;
case 5:
if(temp==0)
{
days=31+29+31+30+d.day;
}
else
days=31+28+31+30+d.day;break;
case 6:
if(temp==0)
{
days=31+29+31+30+31+d.day;
}
else
days=31+28+31+30+31+d.day;break;
case 7:
if(temp==0)
{
days=31+29+31+30+31+30+d.day;
}
else
days=31+28+31+30+31+30+d.day;break;
case 8:
if(temp==0)
{
days=31+29+31+30+31+30+31+d.day;
}
else
days=31+28+31+30+31+30+31+d.day;break;
case 9:
if(temp==0)
{
days=31+29+31+30+31+30+31+31+d.day;
}
else
days=31+29+31+30+31+30+31+31+d.day;break;
case 10:
if(temp==0)
{
days=31+29+31+30+31+30+31+31+30+d.day;
}
else
days=31+29+31+30+31+30+31+31+30+d.day;break;
case 11:
if(temp==0)
{
days=31+29+31+30+31+30+31+31+30+31+d.day;
}
else
days=31+29+31+30+31+30+31+31+30+31+d.day;break;
case 12:
if(temp==0)
{
days=31+29+31+30+31+30+31+31+30+31+30+d.day;
}
else
days=31+29+31+30+31+30+31+31+30+31+30+d.day;break;
}
cout<<days;
return 0;
}

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