4.19

#include<stdio.h>
typedef struct date {
int year;
int month;
int day;
}DATE;
int countDay(DATE);
int runYear(int);
void main()
{
DATE today;
int totalDay;
int result;
printf("please input 指定日期 包括年,月,日 如:1999 1 31\n");
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");
}
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};
int totalDay=0,year,i;
for(year=1990;year<currentDay.year;year++)
{
if(runYear(year))
totalDay=totalDay+366;
else
totalDay=totalDay+365;
}
if(runYear(currentDay.year))
perMonth[2]+=1;
for(i=0;i<currentDay.month;i++)
totalDay+=perMonth[i];
totalDay+=currentDay.day;
return totalDay;
}