Sumof digits bakoabbmqkhvvjk

#include <stdio.h>
void main()
{
    int n, m, digit, sum;
    sum=0;
    printf("\n enter a positive integer");
    scanf("%d", &n);
    m=n;
    while (n>0)
    {
        digit = n%10;
        sum= sum+digit;
        n=n /10;
    }
    n=m;
    printf("\n sum of digits of given number %d = %d", n, sum);
}