Warning: Undefined variable $year in /users/2021/i2151025/public_html/2022/WebProg/ch06/test06-01.php on line 12
년은
Warning: Undefined variable $year in /users/2021/i2151025/public_html/2022/WebProg/ch06/test06-01.php on line 14

Warning: Undefined variable $year in /users/2021/i2151025/public_html/2022/WebProg/ch06/test06-01.php on line 16

Warning: Undefined variable $year in /users/2021/i2151025/public_html/2022/WebProg/ch06/test06-01.php on line 18
윤년입니다.