1for undefined x und
2 if undefined undefine
3
4 undefined int 0; = } und
5 undefined 0; x
6 if x
7 undefined undefin
8 undefined und
9 u
10 for undef
11 for undefin
12 = = { un
13 } undefined
14 u
15 p
16
17 undefined (a) i } for undefined undefine
18 (a) print un
19 i i } if undefined { undefined
20 undefined { } un
21 undefined undefined un
22 x undefin
23 i
24 print undefined undefined undefined un
25 {
26u