打鱼还是晒网？

#include <stdio.h>
typedef struct date
{
int year;
int month;
int day;
}DATE;
int runyear(int year)
{
if((year%4==0&&year%100!=0)||(year%400==0))
return 1;
else
return 0;
}
int countday(DATE currentday)
{
int permonth[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
int totalday=0,year,i;
for(year=1990;year<currentday.year;year++)
{
if(runyear(year))
{
totalday=totalday+366;
}
else
totalday=totalday+365;
}
if(runyear(year))
{
permonth[2]++;
}
for(i=1;i<currentday.month;i++)
{
totalday+=currentday.day;
}
return totalday;
}
void main()
{
int totalday,result;
DATE today;
printf("请输入日期：");
scanf("%d %d %d",&today.year,&today.month,&today.day);
totalday=countday(today);
result=totalday%5;
if(result>0&&result<4)
printf("今天打鱼！");
else
printf("今天晒网！");
}