码图：151 继承Building类（C++）

题目描述：

引入Building.h头文件，它的内容如下：

#include <iostream> using namespace std; class Building{ public: Building(char *name,int floor,int room,int area){ strcpy(this->name,name); this->floor = floor; this->room = room; this->area = area; } virtual void display(){ cout<<"Name:"<<name<<endl; cout<<"Floor:"<<floor<<endl; cout<<"Room:"<<room<<endl; cout<<"Area:"<<area<<endl; } Building * createTeachBuilding(char *name,int floor,int room,int area,char *function); Building * creatDormBuilding(char *name,int floor,int room,int area,int peoples); protected: char name[20]; int floor; int room; float area; };

实现TeachBuilding类和DormBuilding类，这两个类继承至Building类， 除了Building的属性,TeachBuilding类增加代表教学楼功能的char function[20]属性 DormBuilding类增加代表容纳学生总人数的int peoples属性

完成TeachBuilding类和DormBuilding类的display方法，display方法输出类的全部属性。属性的输出格式参照Building类的dispaly方法。

必须实现Building类的createTeachBuilding和creatDormBuilding方法，它们的实现如下：

Building* Building::createTeachBuilding(char *name,int floor,int room,int area,char *function){ return new TeachBuilding(name,floor,room,area,function); } Building * Building::creatDormBuilding(char *name,int floor,int room,int area,int peoples){ return new DormBuilding(name,floor,room,area,peoples); }

它们的实现必选在TeachBuilding类和DormBuilding类的定义之后。

实现：

#include<iostream> #include"Building.h" using namespace std; class TeachBuilding :public Building { private: char function0[20]; public: TeachBuilding(char* name, int floor, int room, int area,char* function) :Building(name, floor, room,area) { strcpy(function0, function); } void display() { cout << "Name:" << name << endl; cout << "Floor:" << floor << endl; cout << "Room:" << room << endl; cout << "Area:" << area << endl; cout << "Function:" << function0 << endl; } }; class DormBuilding :public Building { private: int people; public: DormBuilding(char* name, int floor, int room, int area, int peoples) :Building(name, floor, room, area) { people = peoples; } void display() { cout << "Name:" << name << endl; cout << "Floor:" << floor << endl; cout << "Room:" << room << endl; cout << "Area:" << area << endl; cout << "Peoples:" << people << endl; } }; Building* Building::createTeachBuilding(char* name, int floor, int room, int area, char* function) { return new TeachBuilding(name, floor, room, area, function); } Building* Building::creatDormBuilding(char* name, int floor, int room, int area, int peoples) { return new DormBuilding(name, floor, room, area, peoples); }