80 lines
1.5 KiB
C++
80 lines
1.5 KiB
C++
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// 继上面的Car类， 设计Person类，并设置Car类为Person类的友元类，使得在Person类的成员函数直接访问 Car对象的所有成员。
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// 【提示】Person类的构造函数传入 Car类的对象， 增加Person的成员函数用于操作Car类的成员函数或访问Car对象的属性。
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#include <iostream>
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#include <cstring>
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#include <cstdlib>
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using namespace std;
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class Car
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{
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friend class Person;
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public:
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Car(const string &color, int weight) : color(color), weight(weight) {}
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public:
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void driver()
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{
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cout << "驾车 " << this->weight << " 车重" << endl;
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}
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void start()
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{
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cout << "启动 " << this->color << " 颜色的车" << endl;
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}
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void stop()
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{
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cout << "停车" << endl;
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}
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private:
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string color; // 颜色
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int weight; // 重量
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};
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class Person
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{
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// friend class Car;
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public:
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Person(Car &car) : tcar(car) {}
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public:
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void setCarColor(const string &color)
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{
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// strcpy(tcar.color, color);
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tcar.color = color;
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}
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void setCarWeight(int weight)
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{
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tcar.weight = weight;
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}
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void show()
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{
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cout << "驾驶着一辆" << tcar.color << ", 重" << tcar.weight << "千克的车辆" << endl;
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}
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private:
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Car &tcar;
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};
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void test()
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{
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Car car("红色", 1000);
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Person person(car);
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person.setCarColor("蓝色");
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person.setCarWeight(1230);
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car.start();
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car.driver();
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car.stop();
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person.show();
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}
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int main()
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{
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test();
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return 0;
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}
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