Answer:
values have been declared but not initialized nor allocated memory. So you are not allowed to use "values.length"
Answer:
Explanation:
The dual of a function means replace AND with OR and replace OR with AND.
XOR gate of A , B is

So, Dual of A XOR B is ( replace AND with OR and OR with AND)
Complement of A XOR B is
(In finding compliment AND becomes OR and OR becomes AND ).
By inter changing the above product of terms
Complement of 
So, Dual of A XOR B = Complement of A XOR B.
The hard drive
the power supply
the ram
the heat sink
the cpu
the motherboard
expansion slots
Doctor or teacher or an engineer