Position Digits Sum

The program must accept two positive integers as the input and then print the sum of their unit digits, tenth digits and so on. 

Input Format: The first line will contain A and B separated by a space.

Output Format: The first line will contain the sum of unit digits, tenth digits and so on with the values separated by a space. 

Boundary Conditions: 1 <= A,B <= 9999999 

Example Input/Output 1: 

Input: 

23 49 

Output: 

12 6 

Example Input/Output 2: 

Input: 

12456 687 

Output: 

13 13 10 2 1

Source Code:

#include<stdio.h>

int main()

{

int a,b,r;

scanf("%d %d",&a,&b);

while(a!=0||b!=0)

{

    r=a%10+b%10;

    a/=10;

    b/=10;

    printf("%d ",r);

}

}