int delta_day(int startYear,int startMonth,int startDay,int endYear,int endMonth,int endDay)
{
long deltadate,year, day1, day2;
if ( startYear < endYear )
{
deltadate = count_day ( startYear, startMonth, startDay , 0 );
for (year=startYear+1;year<endYear; year++ )//年份累加
if (leap(year))//遇到闰年
deltadate += 366;
else //平年
deltadate += 365;
deltadate += count_day (endYear, endMonth, endDay, 1);
}
//同一年的时间判断
else if ( startYear == endYear )
{
day1 = count_day ( startYear, startMonth, startDay, 1 );
day2 = count_day ( endYear, endMonth, endDay, 1 );
deltadate = day2-day1;//多的被减出来了
}
else
deltadate = -1; //标识
return deltadate;
}
//返回指定年月的的1号是周几
//已知1970年1月1日为周四，6月1日为周一
int week_day(int year, int month){
int week_map[] = {3,4,5,6,7,1,2};
int days = 1;
int i,w;
for (i=1970; i<year; i++) {//求年的天数
if(is_run(i))
days+=366;
else
days+=365;
}
days+=count_day(year,1,month);
return week_map[days%7];
}
