Difference Between Sum Of Even and Odd Digits

Given a number the task is to find the difference between sum of even and odd digits of the number.

Example 1: Let us take a number 3471. Here sum of even digits is 4 and sum of odd digits is 11. Hence their difference is 11-4 = 7.

Example 2: Let us take a number 8316. Here sum of even digits is 14 and sum of odd digits is 4. Hence their difference is 14-4 = 10.

C
#include <stdio.h>
int main()
{
    int n=0,r=0,eSum=0,oSum=0;
    printf("Enter a number: ");
    scanf("%d",&n);
    while(n>0)
    {
        r=n%10;
        if(r%2==0)
        {
            eSum=eSum+r;
        }
        else
        {
            oSum=oSum+r;
        }
        n=n/10;
    }
    if(eSum>oSum)
    {
        printf("The difference between the sum of odd and even number is %d",(eSum-oSum));
    }
    else
    {
        printf("The difference between the sum of odd and even number is %d",(oSum-eSum));
    }
    return 0;
}
C