Nested conditional - Fruit_shop

#include <iostream>
#include <string>
using namespace std;

int main()
{
    string fruit,weekOfDay;
    cin >> fruit >> weekOfDay;
    double quantity;
    cin >> quantity;
    double price = 0.0;



    if (weekOfDay == "Monday" || weekOfDay == "Tuesday" || weekOfDay == "Wednesday" ||
       weekOfDay == "Thursday" || weekOfDay == "Friday") {
        if (fruit == "banana") {
            price = 2.50;
        }
        else if (fruit == "apple") {
            price = 1.20;
        }
        else if (fruit == "orange") {
            price = 0.85;
        }
        else if (fruit == "grapefruit") {
            price = 1.45;
        }
        else if (fruit == "kiwi") {
            price = 2.70;
        }
        else if (fruit == "pineapple") {
            price = 5.50;
        }
        else if (fruit == "grapes") {
            price = 3.85;
        }

    }
    else if (weekOfDay == "Saturday" || weekOfDay == "Sunday") {
        if (fruit == "banana") {
            price = 2.7;
        }
        else if (fruit == "apple") {
            price = 1.25;
        }
        else if (fruit == "orange") {
            price = 0.9;
        }
        else if (fruit == "grapefruit") {
            price = 1.6;
        }
        else if (fruit == "kiwi") {
            price = 3;
        }
        else if (fruit == "pineapple") {
            price = 5.6;
        }
        else if (fruit == "grapes") {
            price = 4.2;
        }
        if (price > 0) {

        cout.setf(ios::fixed);
        cout.precision(2);
        cout << price * quantity << endl;

        }
        else {
            cout << "error" << endl;
        }

    }

    return 0;
}