fibonacci zadatak (Lejla)

#include<iostream>
using namespace std;

int fib(int n)
{
    int a = 0, b = 1, c, i;
    if (n == 0)
        return a;
    for (i = 2; i <= n; i++)
    {
        c = a + b;
        a = b;
        b = c;
    }
    return b;
}

int main() {
    double suma = 0;
    int x, n;
    cout << "Unesite x i n" << endl;
    cin >> x >> n;
    for (int i = 0; i < n; i++) {
        suma += (fib(i) + x) / pow(x + i, i+1);
    }
    cout << suma << endl;


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