{
int
day,month,year,sum,leap;
printf("\nplease
input
year,month,day\n");
scanf("%d,%d,%d",&year,&month,&day);
switch(month)/*先計算某月以前月份的總天數*/
{
case
1:sum=0;break;
case
2:sum=31;break;
case
3:sum=59;break;
case
4:sum=90;break;
case
5:sum=120;break;
case
6:sum=151;break;
case
7:sum=181;break;
case
8:sum=212;break;
case
9:sum=243;break;
case
10:sum=273;break;
case
11:sum=304;break;
case
12:sum=334;break;
default:printf("data
error");break;
}
sum=sum+day;
/*再加上某天的天數*/
if(year%400==0||(year%4==0&&year%100!=0))/*判斷是不是閏年*/
leap=1;
else
leap=0;
if(leap==1&&month>2)/*如果是閏年且月份大於2,總天數應該加壹天*/
sum++;
printf("It
is
the
%dth
day.",sum);}