Área de código
Programación en lenguaje C-estructura-calcula el día es el día del año
#include<stdio.h>
struct
{
int year;
int month;
int day;
}date;
main()
{
int i,days=0;
int d[13]={0,31,28,31,30,31,30,31,31,30,31,30,31}; //第一个为0，依次输入每个月的天数
printf("input year,month,day\n");
scanf("%d %d %d",&date.year,&date.month,&date.day);
for(i=1;i<date.month;i++)
{
days+=d[i]; //月份累加
}
days+=date.day;
if((date.year%4==0&&date.year%100==0||date.year%400==0)&&(date.month>=3))
days+=1; //闰年加一天
printf("%d/%d is the %dth day\n",date.month,date.day,days,date.year);
}
