lab 11 z1 EVGENY

#include <iostream>
#include <cmath>

using namespace std;

float calc(int y);

int i = -1;

int main()
{
    float x;
    int n;
    cout << "Enter n: " << endl;
    cin >> n;
    x = calc(2*n+1);
    cout << "Your result: " << x << endl;
    return 0;
}

float calc(int y)
{

    i += 2;
    float rez = 0;
    if (i < y)
        rez = i + (1.0 / calc(y));
    else
        rez = i;
    return rez;
}