11. Fruit Shop

#include <iostream>

using namespace std;

int main() {
    string fruit, day;
    cin >> fruit >> day;

    double quantity;
    cin >> quantity;

    double price = 0;

    if (day == "Monday" || day == "Tuesday" || day == "Wednesday" || day == "Thursday" || day == "Friday") {
        price =
            fruit == "banana" ? 2.5 :
            fruit == "apple" ? 1.2 :
            fruit == "orange" ? 0.85 :
            fruit == "grapefruit" ? 1.45 :
            fruit == "kiwi" ? 2.7 :
            fruit == "pineapple" ? 5.5 :
            fruit == "grapes" ? 3.85 : 0;
    }
    else if (day == "Saturday" || day == "Sunday") {
        price =
            fruit == "banana" ? 2.7 :
            fruit == "apple" ? 1.25 :
            fruit == "orange" ? 0.9 :
            fruit == "grapefruit" ? 1.6 :
            fruit == "kiwi" ? 3 :
            fruit == "pineapple" ? 5.6 :
            fruit == "grapes" ? 4.2 : 0;
    }

    cout.setf(ios::fixed);
    cout.precision(2);

    if (price > 0) {
        cout << price * quantity << endl;
    }
    else {
        cout << "error" << endl;
    }

    return 0;
}