Easy - Sum of Digits of a Five Digit Number.c

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>

int main() {

    int n,sum=0;
    scanf("%d", &n);
    while(n>=10)
    {
        sum += n%10;
        n=n/10;
    }
    printf("%d",sum+n);
    return 0;
}