C program to calculate sum of digits of a given number

➽ Program:-

#include<stdio.h>

int main()

{          

    long num, digit, sum = 0, temp;

    printf("Enter the Number: ");

    scanf("%ld", &num);

    temp = num;

   

    while(num > 0)

    {

        digit = num % 10;

        sum  = sum + digit;

        num /= 10;

    }

   

    printf("Sum of the Digits of %ld = %ld", temp, sum);

    return 0;

}

➽ Output:-

Enter the Number: 456789

Sum of the Digits of 456789 = 39