131 lines
2.4 KiB
C++
131 lines
2.4 KiB
C++
#include <iostream>
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#include <cstring>
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using std::cout;
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using std::endl;
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using std::string;
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class Wall
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{
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public:
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Wall() :color(0)
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{
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cout << "构造一面墙" << endl;
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}
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void Paint(int newColor)
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{
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color = newColor;
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cout << "用新颜色粉刷墙" << endl;
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}
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int GetColor() const
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{
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return color;
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}
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virtual void display() {
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cout << "注明颜色：无色0红1橙2黄3绿4青5蓝6紫7其他8" << endl;
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cout << "Wall Color ? : " << this->GetColor() << endl;
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}
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virtual ~Wall() {
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cout << "析构Wall" << endl;
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}
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private:
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int color;
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};
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class Door
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{
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public:
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Door() :openOrClose(false)
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{
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cout << "构造一扇门" << endl;
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}
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void Open()
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{
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if (!IsOpened())
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{
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openOrClose = true;
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cout << "门被打开了" << endl;
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}
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else
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{
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cout << "门开着呢！" << endl;
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}
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}
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void Close()
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{
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if (IsOpened())
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{
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openOrClose = false;
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cout << "门被关上了" << endl;
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}
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else
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{
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cout << "门关着呢！" << endl;
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}
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}
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bool IsOpened() const
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{
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return openOrClose;
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}
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virtual ~Door() {
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}
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private:
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bool openOrClose;
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};
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//颜色：无色0红1橙2黄3绿4青5蓝6紫7其他8
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class WallWithDoor : public Wall, public Door{
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public:
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WallWithDoor() : Door(), Wall(){}
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WallWithDoor(bool fl,int cl) {
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this->Paint(cl);
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fl == true ? this->Open() : this->Close();
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if (cl == 1) this->Close();
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if (cl == 4) this->Open();
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}
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void display() {
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cout << "注明颜色：无色0红1橙2黄3绿4青5蓝6紫7其他8" << endl;
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cout << "Door is Open? :" << this->IsOpened() << endl;
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cout << "Wall Color ? : " << this->GetColor() << endl;
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}
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};
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class WallWithDoor_Combined {
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private:
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Door x;
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Wall y;
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public:
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WallWithDoor_Combined() : x(), y() {}
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WallWithDoor_Combined(bool fl, int cl) {
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y.Paint(cl);
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fl == true ? x.Open() : x.Close();
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if (cl == 1) x.Close();
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if (cl == 4) x.Open();
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}
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void display() {
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cout << "注明颜色：无色0红1橙2黄3绿4青5蓝6紫7其他8" << endl;
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cout << "Door is Open? :" << x.IsOpened() << endl;
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cout << "Wall Color ? : " << y.GetColor() << endl;
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}
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};
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int main() {
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WallWithDoor a1(true,1);
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WallWithDoor a2(true, 2);
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WallWithDoor a3(true, 4);
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WallWithDoor_Combined b1(true,1);
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WallWithDoor_Combined b2(true, 2);
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WallWithDoor_Combined b3(true, 4);
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Wall* p = new Wall();
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Wall* t1 = &a1; //向上转换
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WallWithDoor* t2 = dynamic_cast<WallWithDoor*> (p);//向下转换
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cout << typeid(t2).name() << endl;
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p->display();
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a1.display();
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a2.display();
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a3.display();
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b1.display();
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b2.display();
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b3.display();
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return 0;
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} |