Pastry Shop

#include <iostream>
#include <iomanip>

using namespace std;

int main() {
    string type;
    cin >> type;

    double quantity, date;
    cin >> quantity >> date;

    double price = 0;

    if (date <= 15) {
        if (type == "Cake") {
            price = 24.00;
        }
        else if (type == "Souffle") {
            price = 6.66;
        }
        else {
            price = 12.60;
        }
    }
    else {
        if (type == "Cake") {
            price = 28.70;
        }
        else if (type == "Souffle") {
            price = 9.80;
        }
        else {
            price = 16.98;
        }
    }

    double sum = price * quantity;

    if (date <= 22) {
        if (sum >= 100 && sum <= 200) {
            sum -= sum * 0.15;
        }
        else if (sum > 200) {
            sum -= sum * 0.25;
        }
    }

    if (date <= 15) {
        sum -= sum * 0.10;
    }

    cout << fixed << setprecision(2) << sum << endl;
    return 0;
}

Решение с тернарен оператор:

#include <iostream>
#include <iomanip>

using namespace std;

int main() {
    string type;
    cin >> type;

    double quantity, date;
    cin >> quantity >> date;

    double sum =
        (date <= 15 ? (type == "Cake" ? 24.00 : type == "Souffle" ? 6.66 : 12.60) :
            (type == "Cake" ? 28.70 : type == "Souffle" ? 9.80 : 16.98)) * quantity;

    sum *= date <= 22 ? (sum > 200 ? 0.75 : sum >= 100 ? 0.85 : 1) : 1;

    if (date <= 15) {
        sum *= 0.90;
    }

    cout << fixed << setprecision(2) << sum << endl;
    return 0;
}