T7 - zad.5.

#include <iostream>
#include <functional>

int f(int x)
{
    return 2*x;
}

std::function<int(int)> IteriranaFunkcija(int f(int), int n)
{
    if(n<1) throw "Funkciju moras pozvati makar jednom?!";
    return [f,n](int x){for(int i=0; i<n; i++){x=f(x);} return x;};
}

int main()
{
    std::function<int(int)> g(IteriranaFunkcija(f, 7));
    std::cout << g(2);
    std::cout << std::endl;
    std::cout << f(f(f(f(f(f(f(2)))))));

    return 0;
}