S3 - zad.6

#include <iostream>
#include <iomanip>
#include <vector>
#include <cmath>
#include <stdexcept>

double f(std::vector<double>v)
{
    double suma1(0), suma(0);
    for(int i=0; i<v.size(); i++)
    {
        suma+=v[i];
        if(suma==0) throw "Nazivnik je nula!";
        suma1+=1/(suma);
    }
    return suma1;
}

int main()
{
    int n, a;

    std:: cout << "Unesite broj elemenata niza! ";
    std:: cin >> n;
    std:: vector<double> v(n);
    std:: cout << "Unesite elemente niza: ";
    for(int i=0; i<n; i++)
      std:: cin>> v[i];

    try
    {
      std::cout<< "Suma je: "<< f(v);
    }
    catch(const char poruka[])
    {
        std:: cout<< poruka;
    }



  return 0;
}