Write a program to find out the sum of digits in c using recursion.

Output:
Enter a number: 45
Sum of digits of number: 9

Output:
#include<stdio.h>

int getSum(int);
int main(){
int num,sum;
printf("Enter a number: ");
scanf("%d",&num);

sum = getSum(num);

printf("Sum of digits of number: %d",sum);
return 0;
}

int getSum(int num){

static int sum =0,r;

if(num!=0){
r=num%10;
sum=sum+r;
getSum(num/10);
}

return sum; }