#include <iostream>
using namespace std;

double polynom(unsigned, double);

int main(void)
{
    cout << polynom(2, 3) << endl;
    return 0;
}

double polynom(unsigned n, double x)
{
    double currentAdd(x);
    double res(0);
    while (n)
    {
        res += currentAdd;
        currentAdd *= currentAdd;
        --n;
    }
    return res;
}

using namespace std;

double polynom(unsigned, double);

polynom(-1, 2); // Compiler is happy to convert that -1 to a very large
                // positive number without an y errors. On the reciving
                // side you can not tell if it was an error.

int main(void)
{
    return 0;
}

double currentAdd(x);
    double res(0);

double currentAdd = x;
    double res        = 0;

while (n)
    {
        --n;
    }
    // over
    for(;n; --n)
    {
    }