311_1402

#include <iostream>

using namespace std;

void show_menu();
void converter_rub2usd();
void converter_usd2rub();

void children() {
    int k = 0;
    //cout << "Enter ";
    //cin >> k;
    while(k < 10) {
        cout << k << " ";
        k++;
    }
    cout << endl;
}

void bill() {
    int summ = 0;
    int price;
    int n = 0;

    while (n < 4) {
        cout << "Enter " << n << " product ";
        cin >> price;
        summ += price;
        n++;
    }
    cout << "TOTAL: " << summ << endl;
}

const double price_usd_rub = 91.51;

void converter_rub2usd() {
    double rub, usd;
    cout << "Enter numbers of rub for covert to usd: ";
    cin >> rub;

    usd = rub / price_usd_rub;
    cout << "You can take " << usd << " usd" << endl;
}

void converter_usd2rub() {
    double rub, usd;
    cout << "Enter numbers of usd for covert to rub: ";
    cin >> usd;

    rub = usd * price_usd_rub;
    cout << "You can take " << rub << " rub" << endl;
}

void show_menu() {
    cout << endl;
    cout << "     Converter Money    " << endl;
    cout << endl;

    cout << " 1. Convert rub to usd." << endl;
    cout << " 2. Convert usd to rub." << endl;
    cout << " 0. Exit." << endl;
    int mode = 1;
    while (mode > 0) {
        cin >> mode;
        if (mode == 1) {
            converter_rub2usd();
        }
        if (mode == 2) {
            converter_usd2rub();
        }
        cout << "Enter 0 for exit" << endl;
    }
    cout << endl;
}

int main() {
    //children();
    //bill();
    //converter_money();
    show_menu();
    system("pause");
    return 0;
}