Sum of Digits Using Recursion

DigitSum.cpp

// Sum of Digits Using Recursion

#include <iostream>
using namespace std;
int DigitSum(int);

int main() {
	int num, sum;
	cout<<"Enter Number to add digit: ";
	cin>>num;
	sum = DigitSum(num);
	cout<<"Sum = "<<sum<<endl;
}

int DigitSum(int n) {
	if(n == 0) return 0;
	else 
		return ((n%10) + DigitSum(n / 10));
}