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