28 29

很久不用java了 都忘了 用类c写个吧 希望对你又帮助 思路就是这样的

int a[12]

a(1) = 31

a(2) = 29

a(3) = 31

a(4) = 30

a(5) = 31

a(6) = 30

a(7) = 31

a(8) = 31

a(9) = 30

a(10) = 31

a(11) = 30

a(12) = 31

for(i=0;i<moth;i++)

{

sumday= sumday +a(i);

}

if year / 400 == 0 or ( year / 100 != 0 and year / 4 != 0 ) then

if month <3 then

sumday =sumday + day-1 /*最后2月用29因为输入的日期可能是2 29

else

sumday =sumday + day

end if

else

sumday =sumday + day-1

end if