问题描述
编写一个程序,用户输入年月日,显示该日是该年的第几天。
代码
#include <stdio.h>
struct when
{
int year;
int month;
int day;
};
int days(struct when date)
{
int m[]={31,28,31,30,31,30,31,31,30,31,30,31};
int i,day=0;
if(date.year%4==0)
{m[1]=29;}
for(i=0;i<date.month-1;i++)
{
day=day+m[i];
}
day=day+date.day;
return day;
}
int main(int argc, char *argv[])
{
struct when date;
int b;
printf("请输入日期\n");
scanf("%d.%d.%d",&date.year,&date.month,&date.day);
b=days(date);
printf("该日是本年的第%d天\n",b);
return 0;
}