입려된 두값은 "
Warning: Undefined array key "a" in /users/2019/i1919056/public_html/2022/WebProg/ch03/exam03-10.php on line 9
" 와(과) "
Warning: Undefined array key "b" in /users/2019/i1919056/public_html/2022/WebProg/ch03/exam03-10.php on line 11
"