print sum of digits.cpp

#include <iostream>

using namespace std;

int main() {

 int num, sum = 0;

 cout << "Enter a positive integer: ";

 cin >> num;

 while (num != 0) {

 sum += num % 10;

 num /= 10;

 }

 cout << "Sum of digits: " << sum << endl;

 return 0;

}