102_Digit_Sum_CF

#include <stdio.h>
int main()
{
   int n, rev = 0, remainder, x, count=0;

    scanf("%d", &n);

    while (n != 0)
    {
        remainder = n % 10;
        rev = rev * 10 + remainder;
        n /= 10;

    }
    while(rev != 0)
    {
        x = rev%10;
        rev = rev/10;
        if(x != 0)
        {
            count++;
        }
    }

    printf("%d\n", count);

    return 0;
}