年积日计算

年积日:一年中的第几天

程序实现

#include <iostream>
#include <string>
using namespace std;
int main() 
{
    
       int i,sum=0,year,month,day;
int tab[12]= {
    
    31,28,31,30,31,30,31,31,30,31,30,31};
cout<<"输入年:";cin>>year;cout<<endl;
cout<<"输入月:";cin>>month;cout<<endl;
cout<<"输入日:";cin>>day;cout<<endl;
if((year%4==0&&year%100!=0)||year%400==0)
      tab[1]= 29;
for(i=0;i<month-1;i++)
	{
    
    sum+=tab[i]; }
sum+=day;
cout<<"年积日:"<<sum<<endl;
return 0;
}

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转载自blog.csdn.net/HEU_monster/article/details/108602810