입력된 두 값은 "
Warning: Undefined array key "a" in /users/2018/i1858006/public_html/2019/webprog/ch03/exam03-10.php on line 10
" 와(과) "
Warning: Undefined array key "b" in /users/2018/i1858006/public_html/2019/webprog/ch03/exam03-10.php on line 12
" 입니다.