Suma n članova harmonijskog niza

#include <iostream>
using namespace std;

void HSuma(int, double&);

int main() {
       int n;
       double H = 1;

       do {
       cout << "Unesite n: ";
       cin >> n;
       } while(n <= 0);

       HSuma(n, H);

       cout << "Suma prvih " << n << " clanova harmonijskog niza iznosi: " << H << endl;

       system ("pause>0");
       return 0;
}

void HSuma(int n, double&H)  {
       for (int i = 2; i <= n; i++)
           H += 1.0 / i;
}