输入一个日期判断是当年的第几天 ← C语言实现

【switch语句实现】

#include 
#include 

/*
Common year:365 -->31,28,31,30,31,30,31,31,30,31,30,31
Leap year:366   -->31,29,31,30,31,30,31,31,30,31,30,31
*/

int year,month,day;
int main() {
	int flag=0, cnt=0;
	int i;
	scanf("%d-%d-%d", &year, &month, &day);
	
	if(year%4==0 && year%100!=0 || year%400==0)
		flag=1;

	for(i=1; i