#if 0
#include<stdio.h>
//輸入一個日期，判斷這個日期是所在年的第幾天

int findDate(int year,int mouth,int day)
{
bool IsleapYear = false;
int days = day;
int leapYear[12] = {31,30,31,30,31,30,31,31,30,31,30,31};  //閏年12個月的天數
int commonYear[12] = {31,29,31,30,31,30,31,31,30,31,30,31}; //平年12個月的天數

if(year<=0||mouth<=0||mouth>12
 
||day<=0||day>31)
return 0;
if((year%400 == 0)||(year%4 == 0 &&year%100 !=0)) //判斷是否是閏年
IsleapYear = true;
for(int i = 0;i<mouth-1;i++)
{
if(IsleapYear)
{
days+=leapYear[i];
}
else
days+=commonYear[i];
}
return days;
}

int main()
{
int day = findDate(2017,2,14);
printf("%d\n",day);
}
#endif