Program for Sum the digits of a given number

Examples :

Input : n = 687

Output : 21

C program:

# include<stdio.h>

/* Function to get sum of digits */

int getSum(int n)

{

    int sum;

    /* Single line that calculates sum */

    for (sum = 0; n > 0; sum += n % 10, n /= 10);

    return sum;

}

int main()

{

  int n = 687;

  printf(" %d ", getSum(n));

  return 0;

}

Output:

21