If a number (n) is provided as an input, find the square of the sum of the digits of the number.
Example
If n = 21, the answer will be square of (2 + 1) = 9
what's the answer for (-4+3+1)??? last time I checked, the answer was zero!!!!
-4 + 3 +1=0 right. I don't remember you saying the absolute value in the instructions.