技術標籤：c語言

#include<stdio.h>
int day_of_year(year,month,day); 
int main()
{
	int year,month,day;
	scanf("%d %d %d",&year,&month,&day);
	printf("%d",(day_of_year(year,month,day)));
	return 0;
}
int day_of_year(year,month,day)
{
	int i,leap; 
	int tab[2][13]={
	    {
 
0,31,28,31,30,31,30,31,31,30,31,30,31},//非 
	    {0,31,29,31,30,31,30,31,31,30,31,30,31}//閏年 
    };
	   leap=(year%4==0&&year%100!=0||year%400==0);//1為閏年 0為非 
	   for(i=1;i<month;i++){
	   day+=tab[leap][i];
	   }	
	
    
	return day;
}