#include <iostream>
#include <cstdlib>
using namespace std;

void menu() {
    cout << "1. Bin -> Dec" << endl;
    cout << "2. Dec -> Bin" << endl;
    cout << "3. Potegowanie" << endl;
    cout << "0. Koniec" << endl;
    cout << "Co chcesz zrobic?: ";
}

void bintoDec(int bin, int dec, int w, int potega) {
    potega = 1;
    cout << "Podaj liczbe w binarnym: ";
    cin >> bin;
    do {
        w = bin % 10;
        dec = w * potega + dec;
        bin = bin / 10;
        potega = potega * 2;
    } while(bin > 0);
    cout << "Wynik to: " << dec << endl;
}

void dectoBin(int bin, int dec, int w, int potega) {
    potega = 1;
    bin = 0;
    cout << "Podaj liczbe w dziesietnym: ";
    cin >> dec;
    do {
        w = dec % 2;
        bin = w * potega + bin;
        potega = potega * 10;
        dec = dec / 2;
    } while(dec > 0);
    cout << "Wynik to: " << bin << endl;
}

void obliczPotega(int potega, int podstawa, int wykladnik, int i) {
    potega = 1;
    cout << "Podaj kolejno podstawe i wykladnik: ";
    cin >> podstawa;
    cin >> wykladnik;
    for(i = wykladnik; i > 0; i--) {
        potega = potega * podstawa;
    }
    cout << "Wynik to: " << potega << endl;
}

int main(int argc, char** argv) {

    int ch, bin, dec, w, i, podstawa, wykladnik;
    int potega = 1;

    do {
        menu();
        cin >> ch;

        switch(ch) {
            case 1:
                system("cls");
                bintoDec(bin, dec, w, potega);
                break;
            case 2:
                system("cls");
                dectoBin(bin, dec, w, potega);
                break;
            case 3:
                system("cls");
                obliczPotega(potega, podstawa, wykladnik, i);
            default:
                break;
        }
    } while(ch != 0);

    return 0;
}