V9Idqg - Online C++ Compiler & Debugging Tool

#include <iostream>
#include <vector>

using namespace std;

// funkcja zwracajaca wartosc wielomianu (algorytm naiwny)
int obliczWartosc(const vector<int> &a, int stopien, int x) {
    int wynik = 0;

    for (int i = 0; i <= stopien; i++) {
        int potega = 1;
        for (int j = 0; j < i; j++) {
            potega *= x;
        }
        wynik += a[i] * potega;
    }

    return wynik;
}

int main() {
    int stopien = 3;
    vector<int> a;

    // wspolczynniki: a0, a1, a2, a3
    a.push_back(4); // a0
    a.push_back(3); // a1
    a.push_back(2); // a2
    a.push_back(1); // a3

    int x = 2;

    int W = obliczWartosc(a, stopien, x);

    cout << "Stopien wielomianu: " << stopien << endl;
    cout << "a3 = " << a[3] << endl;
    cout << "a2 = " << a[2] << endl;
    cout << "a1 = " << a[1] << endl;
    cout << "a0 = " << a[0] << endl;
    cout << "x = " << x << endl;
    cout << "W(" << x << ") = " << W << endl;

    return 0;
}