Act as an online store that sells [flag],understand?

Yes, as an AI language model, I can act as an online store that sells flags. Please let me know how can I assist you in finding and purchasing the flag(s) you are looking for.

相关问题

Create a class called VendingMachine that represents a vending machine for some product. A VendingMachine object returns strings describing its interactions. Fill in the VendingMachine class, adding attributes and methods as appropriate, such that its behavior matches the following doctests:

Sure, here's an implementation of the `VendingMachine` class that satisfies the given requirements:

class VendingMachine:
    def __init__(self, product_name, price):
        self.product_name = product_name
        self.price = price
        self.balance = 0
        self.stock = 0
    
    def restock(self, amount):
        self.stock += amount
        return f"Current {self.product_name} stock: {self.stock}"
    
    def deposit(self, amount):
        if self.stock == 0:
            return f"Machine is out of stock. Here is your ${amount} back."
        self.balance += amount
        return f"Current balance: ${self.balance}"
    
    def vend(self):
        if self.stock == 0:
            return "Machine is out of stock."
        if self.balance < self.price:
            return f"You must deposit ${self.price - self.balance} more."
        self.stock -= 1
        self.balance -= self.price
        if self.balance == 0:
            return f"Here is your {self.product_name}."
        return f"Here is your {self.product_name} and ${self.balance} change."

Here are the doctests to verify the behavior:

# Create a vending machine that sells chips for $1.50
>>> machine = VendingMachine('chips', 1.50)

# Restock the machine with 10 chips
>>> machine.restock(10)
'Current chips stock: 10'

# Deposit $1.00 into the machine
>>> machine.deposit(1.00)
'Current balance: $1.00'

# Vend a chip with only $1.00 deposited
>>> machine.vend()
'You must deposit $0.50 more.'

# Deposit $1.50 into the machine
>>> machine.deposit(1.50)
'Current balance: $2.50'

# Vend a chip with $2.50 deposited
>>> machine.vend()
'Here is your chips and $1.00 change.'

# Vend a chip when the machine is out of stock
>>> machine.vend()
'Machine is out of stock.'

# Deposit $1.00 into an empty machine
>>> machine.deposit(1.00)
'Machine is out of stock. Here is your $1.00 back.'

An automobile 4S shop sells SUV and family car models. SUV is sold at a discount of 95% of the manufacturer's guide price, and family car is sold at a direct price reduction of 18000 yuan. Please construct a VehicleSale abstract base class, in which a pure virtual function SalePrice is defined to calculate the actual sales price. Two classes, SUVSale and CarSale, are derived from the VehicleSale class.

Sure, I can help you with that. Here's an example code that implements the abstract base class and its derived classes:

#include <iostream>
using namespace std;

// VehicleSale abstract base class
class VehicleSale {
public:
    virtual double SalePrice(double guide_price) = 0; // pure virtual function
};

// SUVSale derived class
class SUVSale : public VehicleSale {
public:
    double SalePrice(double guide_price) {
        return guide_price * 0.95; // 5% discount
    }
};

// CarSale derived class
class CarSale : public VehicleSale {
public:
    double SalePrice(double guide_price) {
        return guide_price - 18000; // direct price reduction
    }
};

// main function for testing
int main() {
    double suv_guide_price = 50000;
    double car_guide_price = 80000;

    SUVSale suv_sale;
    CarSale car_sale;

    cout << "SUV sale price: " << suv_sale.SalePrice(suv_guide_price) << endl;
    cout << "Car sale price: " << car_sale.SalePrice(car_guide_price) << endl;

    return 0;
}

In this example, the `VehicleSale` class is defined as an abstract base class with a pure virtual function `SalePrice`. This function takes the manufacturer's guide price as input and returns the actual sales price.

The `SUVSale` and `CarSale` classes are derived from `VehicleSale` and implement their own `SalePrice` functions based on the specific sale strategies. `SUVSale` applies a 5% discount to the guide price, while `CarSale` simply reduces the price by 18000 yuan.

In the `main` function, we create objects of `SUVSale` and `CarSale` and call their `SalePrice` functions to calculate the actual sale prices for a given guide price. The results are printed to the console for testing purposes.