C++ 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.

好的，让我来帮您构建这个基类和派生类的代码：

#include <iostream>
using namespace std;

class VehicleSale {
public:
    virtual double SalePrice() = 0;
};

class SUVSale : public VehicleSale {
private:
    double guidePrice;

public:
    SUVSale(double price) {
        guidePrice = price;
    }

    double SalePrice() {
        return 0.95 * guidePrice;
    }
};

class CarSale : public VehicleSale {
private:
    double originalPrice;

public:
    CarSale(double price) {
        originalPrice = price;
    }

    double SalePrice() {
        return originalPrice - 18000;
    }
};

int main() {
    SUVSale suv(100000);
    CarSale car(80000);

    cout << "SUV actual sales price: " << suv.SalePrice() << " yuan" << endl;
    cout << "Family car actual sales price: " << car.SalePrice() << " yuan" << endl;

    return 0;
}

在上面的代码中，我们定义了一个抽象基类VehicleSale，其中包含一个纯虚函数SalePrice。这个函数在派生类中被实现，用于计算实际的销售价格。我们又定义了两个派生类SUVSale和CarSale，分别用于销售SUV和家用车，并分别实现了SalePrice函数。在main函数中，我们创建了一个SUV和一个家用车的对象，并分别调用了它们的SalePrice函数来计算实际销售价格。