|
开始 |
|
year=2000 |
|
year不能被4整除 |
|
year不能被100整除 |
|
year=year+1 |
|
year>2500 |
|
结束 |
|
Year不能被400整除 |
|
输出year “不是闰年” |
|
输出year “是闰年” |
|
输出year “不是闰年” |
|
Y |
|
N |
|
Y |
|
输出year “是闰年” |
|
N |
|
Y |
|
N |
|
N |
|
Y |