P2.02 P59539 Harmonic numbers (1)

#include <iostream>
using namespace std;


int main() {
    cout.setf(ios::fixed);
    cout.precision(4);

    double n,m;
    m=0;
    cin >> n;

    while (n>0) {
        m=m+(1/n);
        n=(n-1);
    }
    cout << m << endl;
}