W3School TIY Editor

#include <iostream>

#include <string>

using namespace std;

​

// 基类

class Vehicle {

  public: 

    string brand = "福特";

    void honk() {

      cout << "嘟嘟! \n" ;

    }

};

​

// 派生类

class Car: public Vehicle {

  public: 

    string model = "野马";

};

​

int main() {

  Car myCar;

  myCar.honk();

  cout << myCar.brand + " " + myCar.model;

  return 0;

}