C Program to find the sum of individual digits of a positive integer

Write a C Program to find the sum of individual digits of a positive integer

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Program:

#include<stdio.h>

void main()

{

    int num, k=1, sum=0;

    printf("Enter the number whose digits are to be added:");

    scanf("%d",&num);

    while(num!=0)

    {

        k=num%10;

        sum=sum+k;

        k=num/10;

        num=k;

    }

    printf("Sum of the digits:%d \n",sum);

}