CODE GIVING WRONG OUTPUTS

#1

Hi,
When I am printing x that is the whole 1st array as a single number then the output is coming 0 ad when I am printing 2 nd array as whole number then it is printing the 1st array’
Kindly help

#2

since the size of array can be as big as 1000. you cannot combine the digits as you cannot store number that big in long long int, you need to take 3rd array and store the sum in that array.
Code for reference

#3

Thanks for the reference

#4

Can you send an explanation of the logic

#5

For the given sample case , arr1=[1, 0, 2, 9] and arr2=[3, 4, 5, 6, 7] .Each element of both the arrays is a digit .Thus, both array forms two separate numbers and we need to calculate the sum of these two numbers.

Take an ans array (whose size is equal to the (max size of the two arrays +1 )) which will store the final number formed.

Start adding both the numbers digit by digit from the end i.e. 9+7=16 thus 6 is stored in the ans array at last index (as we are updating our array from last) and 1 is taken as carry.Thus, this process is repeated for every digit and at the end if carry is not 0 it is stored at the starting index of the ans array.First digit of the ans array represent carry over which is zero in this case. So ans is [3, 5, 5, 9, 6].