04. Car To Go

#include <iostream>
#include <iomanip>

using namespace std;

int main() {
    double budget;
    cin >> budget;

    string season;
    cin >> season;

    string modelCar = "";
    string classCar = "";

    if (budget <= 100) {
        if (season == "Summer") {
            modelCar = "Cabrio";
            budget *= 0.35;
        }
        else {
            modelCar = "Jeep";
            budget *= 0.65;
        }
        classCar = "Economy class";
    }
    else if (budget <= 500) {
        if (season == "Summer") {
            modelCar = "Cabrio";
            budget *= 0.45;
        }
        else {
            modelCar = "Jeep";
            budget *= 0.80;
        }
        classCar = "Compact class";
    }
    else {
        modelCar = "Jeep";
        classCar = "Luxury class";
        budget *= 0.90;
    }

    cout << (classCar) << endl;
    cout << modelCar << " - " << fixed << setprecision(2) << budget << endl;

    return 0;
}

Или леко тарикатската:

#include <iostream>
#include <iomanip>

using namespace std;

int main() {
    double budget;
    cin >> budget;

    string season;
    cin >> season;

    string modelCar = "Jeep";
    string classCar = "Luxury";

    if (budget <= 100) {
        if (season == "Summer") {
            modelCar = "Cabrio";
            budget *= 0.35;
        }
        else {
            budget *= 0.65;
        }
        classCar = "Economy class";
    }
    else if (budget <= 500) {
        if (season == "Summer") {
            modelCar = "Cabrio";
            budget *= 0.45;
        }
        else {
            budget *= 0.80;
        }
        classCar = "Compact class";
    }
    else {
        classCar = "Luxury class";
        budget *= 0.90;
    }

    cout << (classCar) << endl;
    cout << modelCar << " - " << fixed << setprecision(2) << budget << endl;

    return 0;
}

Решение с тернарен оператор:

#include <iostream>
#include <iomanip>

using namespace std;

int main() {
    double budget;
    cin >> budget;

    string season;
    cin >> season;

    string modelCar = budget <= 500 ? (season == "Summer" ? "Cabrio" : "Jeep") : "Jeep";

    string classCar = budget <= 100 ? "Economy class" : budget <= 500 ? "Compact class" : "Luxury class";

    budget *=
        budget <= 100 ? (season == "Summer" ? 0.35 : 0.65) :
        budget <= 500 ? (season == "Summer" ? 0.45 : 0.80) : 0.90;

    cout << (classCar) << endl;
    cout << modelCar << " - " << fixed << setprecision(2) << budget << endl;

    return 0;
}