Fitness Card

#include <iostream>
#include <iomanip>

using namespace std;

int main() {
    double cash, sum;
    cin >> cash;

    string gender;
    cin >> gender;

    int age;
    cin >> age;

    string sport;
    cin >> sport;

    if (gender == "m") {
        if (sport == "Gym") {
            sum = 42;
        }
        else if (sport == "Boxing") {
            sum = 41;
        }
        else if (sport == "Yoga") {
            sum = 45;
        }
        else if (sport == "Zumba") {
            sum = 34;
        }
        else if (sport == "Dances") {
            sum = 51;
        }
        else if (sport == "Pilates") {
            sum = 39;
        }
    }
    else {
        if (sport == "Gym") {
            sum = 35;

        }
        else if (sport == "Boxing") {
            sum = 37;
        }
        else if (sport == "Yoga") {
            sum = 42;
        }
        else if (sport == "Zumba") {
            sum = 31;
        }

        else if (sport == "Dances") {
            sum = 53;
        }
        else if (sport == "Pilates") {
            sum = 37;
        }
    }

    if (age <= 19) {
        sum *= 0.8;
    }

    if (sum <= cash) {
        cout << "You purchased a 1 month pass for " << sport << ".\n";
    }
    else {
        cout << "You don't have enough money! You need $" << fixed << setprecision(2) << sum - cash << " more.\n";
    }
    return 0;
}

Решение с тернарен оператор:

#include <iostream>
#include <string>

using namespace std;

int main() {
    double cash, sum;
    cin >> cash;

    string gender;
    cin >> gender;

    int age;
    cin >> age;

    string sport;
    cin >> sport;

    sum =
        (sport == "Gym" ? (gender == "m" ? 42 : 35) :
            sport == "Boxing" ? (gender == "m" ? 41 : 37) :
            sport == "Yoga" ? (gender == "m" ? 45 : 42) :
            sport == "Zumba" ? (gender == "m" ? 34 : 31) :
            sport == "Dances" ? (gender == "m" ? 51 : 53) :
            sport == "Pilates" ? (gender == "m" ? 39 : 37) : 0) * (age <= 19 ? 0.8 : 1);

    sum <= cash
        ? printf("You purchased a 1 month pass for %s.\n", sport.c_str())
        : printf("You don't have enough money! You need $%.2f more.\n", sum - cash);

    return 0;
}