To determine the value of l_child_number
, let's go through the code step by step:
- The variable
l_parent_number
is declared and assigned a value of 1.
- Inside the outer
BEGIN
block, the variable l_child_number
is declared and assigned a value of 2.
- Inside the inner
BEGIN
block, l_child_number
is updated by adding l_parent_number
and l_child_number
. Therefore, l_child_number
becomes 1 + 2 = 3.
- After the inner
BEGIN
block, the value of l_child_number
is printed using DBMS_OUTPUT.PUT_LINE
.
- If any exception occurs in the code, the
WHEN OTHERS
block is executed, and l_child_number
is assigned a value of 0.
- Since there are no exceptions in the code, the value of
l_child_number
remains 3, and it is printed.
Therefore, the correct answer is D) 0.