i did not understand the sample output given in the problem statement. this is not the sum of arrays which are given in the sample input of statement.
Output statement of given problem
In this question, you are given two arrays, arr1[ ] and arr2[ ],
4
1 0 2 9
5
3 4 5 6 7
So you will maintain sum and carry as two variables,
Then you will add the two arrays normally , such that ,you will add normally from right to left.
9+7 =`16, thus carry=1, sum=6
2+6+1 = 9 , sum=9, carry=0
5+0=5 , sum=5, carry=0
4+1=5 , sum=5. carry=0
3
Thus output is : 3, 5, 5, 9, 6