C++ //多态案例三 ---电脑组装

  1 //多态案例三 ---电脑组装
  2
  3 #include <iostream>
  4 #include <string>
  5 using namespace std;
  6
  7 //抽象不同零件类
  8 //抽象CPU类
  9
 10 class CPU
 11 {
 12 public:
 13     //抽象的计算函数
 14     virtual void calculate() = 0;
 15
 16
 17
 18
 19
 20 };
 21 //抽象显卡类
 22 class VideoCard
 23 {
 24 public:
 25     //抽象的显示函数
 26     virtual void display() = 0;
 27
 28
 29
 30
 31
 32 };
 33
 34 //抽象内存条类
 35 class Memory
 36 {
 37 public:
 38     //抽象的存储函数
 39     virtual void storage() = 0;
 40
 41
 42
 43
 44
 45 };
 46
 47
 48 //电脑类
 49 class Computer
 50 {
 51 public:
 52     Computer(CPU* cpu, VideoCard* vc, Memory* mem)
 53     {
 54         m_cpu = cpu;
 55         m_mem = mem;
 56         m_vc = vc;
 57     }
 58
 59     //提供工作的函数
 60     void work()
 61     {
 62
 63         //让零件工作起来，调用接口
 64         m_cpu->calculate();
 65
 66         m_vc->display();
 67
 68         m_mem->storage();
 69     }
 70
 71     //提供析构函数 释放3个电脑零件
 72     ~Computer()
 73     {
 74         //释放CPU零件
 75         if (m_cpu != NULL)
 76         {
 77             delete m_cpu;
 78             m_cpu = NULL;
 79         }
 80         //释放显卡零件
 81         if (m_vc != NULL)
 82         {
 83             delete m_vc;
 84             m_vc = NULL;
 85         }
 86         //释放内存零件
 87         if (m_mem != NULL)
 88         {
 89             delete m_mem;
 90             m_mem = NULL;
 91         }
 92
 93     }
 94
 95 private:
 96
 97     CPU* m_cpu;            //CPU的零件指针
 98     VideoCard* m_vc;    //显卡的零件指针
 99     Memory* m_mem;        //内存条零件指针
100
101
102 };
103 //具体厂商
104 //Intel 厂商
105
106 class IntelCPU :public CPU
107 {
108 public:
109     virtual void calculate()
110     {
111         cout << "Intel的CPU开始计算了" << endl;
112     }
113 };
114
115 class IntelVideoCard :public VideoCard
116 {
117 public:
118     virtual void display()
119     {
120         cout << "Intel的显卡开始显示了" << endl;
121     }
122 };
123
124 class IntelMemory :public Memory
125 {
126 public:
127     virtual void storage()
128     {
129         cout << "Intel的内存条开始储存了" << endl;
130     }
131 };
132
133
134 //Lenovo厂商
135 class LenovoCPU :public CPU
136 {
137 public:
138     virtual void calculate()
139     {
140         cout << "Lenovo的CPU开始计算了" << endl;
141     }
142 };
143
144 class LenovoVideoCard :public VideoCard
145 {
146 public:
147     virtual void display()
148     {
149         cout << "Lenovo的显卡开始显示了" << endl;
150     }
151 };
152
153 class LenovoMemory :public Memory
154 {
155 public:
156     virtual void storage()
157     {
158         cout << "Lenovo的内存条开始储存了" << endl;
159     }
160 };
161
162 void test01()
163 {
164     //第一台电脑的零件
165     cout << "创建第一台电脑" << endl;
166     CPU* intelCpu = new IntelCPU;
167     VideoCard* intelCard = new IntelVideoCard;
168     Memory* intelMem = new IntelMemory;
169
170     //创建第一台电脑
171     Computer* computer1 = new Computer(intelCpu,intelCard,intelMem);
172     computer1->work();
173     delete computer1;
174
175     //delete intelCpu;
176     //delete intelCard;
177     //delete intelMem;
178
179     //第二台电脑的组装
180
181     //CPU* lenovoCpu = new LenovoCPU;
182     //VideoCard* lenovoCard = new  LenovoVideoCard;
183     //Memory* lenovoMem = new  LenovoMemory;
184
185
186     //Computer* computer2 = new Computer(lenovoCpu, lenovoCard, lenovoMem);
187     //computer2->work();
188     //delete computer2;
189     cout << "*************************************"<<endl;
190     cout << "创建第二台电脑" << endl;
191
192     //第二台电脑的组装
193     Computer* computer2 = new Computer(new  LenovoCPU, new  LenovoVideoCard, new  LenovoMemory);
194     computer2->work();
195     delete computer2;
196
197
198     cout << "*************************************" << endl;
199     cout << "创建第三台电脑" << endl;
200
201     //第二台电脑的组装
202     Computer* computer3 = new Computer(new  LenovoCPU, new IntelVideoCard, new  LenovoMemory);
203     computer3->work();
204     delete computer3;
205
206
207
208
209 }
210
211 int main()
212 {
213
214     test01();
215
216
217     system("pause");
218
219     return 0;
220
221 }