输入在一行中按照格式“yyyy/mm/dd”（即“年/月/日”）给出日期。注意：闰年的判别条件是该年年份能被4整除但不能被100整除、或者能被400整除。闰年的2月有29天。
#include<stdio.h>
int main()
{
int nian,yue,ri;
int i,sum1=0,sum=0;
scanf("%d/%d/%d",&nian,&yue,&ri);
if((nian % 400 == 0) || (nian%4==0&&nian%100!=0))
{
int a[12]={31,29,31,30,31,30,31,31,30,31,30,31};
for(i=0;i<yue-1;i++)
{
sum1+=a[i];
}
sum=sum1+ri;
}else
{
int b[12]={31,28,31,30,31,30,31,31,30,31,30,31};
for(i=0;i<yue-1;i++)
{
sum1+=b[i];
}
sum=sum1+ri;
}
printf("%d",sum);
return 0;
}
