To answer this question, let's go through the code step by step:
The statement set serveroutput on;
enables the output display in Oracle.
The keyword declare
is used to declare variables within the block.
The variables a
and b
of type int
are declared.
The value of a
and b
are set to NULL
.
The if
statement checks if a
is less than b
. Since both a
and b
are NULL
, the condition evaluates to NULL
.
In Oracle, NULL
is considered an unknown value. When comparing NULL
with any other value, the result is always NULL
.
The else
part of the if
statement is executed because the condition is not satisfied. It prints 'n' using the dbms_output.put_line
function.
Finally, the end if;
marks the end of the if
statement.
Based on the above explanation, the correct answer is:
Option B) n