Subset sum easy

#1

I think boolean res2 is the problem here, can you guide me what is the mistake here

#2

Your code will return true for all cases because it will consider the empty subset to be with sum 0. You could correct it using either of these two approaches:
1] Calculate the total number of subsets with zero sum and check if it is greater than or equal to 1.
2] Send a flag to indicate that atleast an element has been taken or not. Return true only if sum equals to 0 and flag is 1.