Size of array1 = 3
$array1[0] = 10
$array1[2] = 30

Size of score = 3
Lee : 100점

Warning: Undefined array key "kim" in /users/2020/i2019068/public_html/2022/WebProg/ch04/exam04-13.php on line 23
Kim : 점
Seo : 80점