一、程序及输出
computer类包含了CPU、VideoCard和Memory三个基类的指针成员。
在test01函数中，创建了两台电脑，每台电脑由不同厂商的CPU、VideoCard和Memory组成。
通过调用doWork函数，每台电脑会分别执行CPU的calculate、VideoCard的display和Memory的storage操作。
#include<iostream>
using namespace std;
//CPU基类
class CPU
{
public:
virtual void calculate() = 0;
};
//显卡基类
class VideoCard
{
public:
virtual void display() = 0;
};
//内存基类
class Memory
{
public:
virtual void storage() = 0;
};
//电脑类
class computer
{
public:
computer(CPU * cpu, VideoCard * vc, Memory * mem)
{
cout << "电脑构造调用" << endl;
this->m_Cpu = cpu;
this->m_Vc = vc;
this->m_Mem = mem;
}
void doWork()
{
this->m_Cpu->calculate();
this->m_Vc->display();
this->m_Mem->storage();
}
~computer()
{
cout << "电脑析构调用" << endl;
if (this->m_Cpu)
{
delete this->m_Cpu;
this->m_Cpu = NULL;
}
if (this->m_Vc)
{
delete this->m_Vc;
this->m_Vc = NULL;
}
if (this->m_Mem)
{
delete this->m_Mem;
this->m_Mem = NULL;
}
}
CPU * m_Cpu;
VideoCard * m_Vc;
Memory * m_Mem;
};
//inter厂商
class intelCPU :public CPU
{
public:
void calculate()
{
cout << "intelCPU开始计算了" << endl;
}
};
class intelVideoCard :public VideoCard
{
public:
void display()
{
cout << "intel 显卡开始显示了" << endl;
}
};
class intelMemory :public Memory
{
public:
void storage()
{
cout << "intel 内存条开始存储了" << endl;
}
};
//Lenovo 厂商
class LenovoCPU :public CPU
{
public:
void calculate()
{
cout << "Lenovo CPU开始计算了" << endl;
}
};
class LenovoVideoCard :public VideoCard
{
public:
void display()
{
cout << "Lenovo 显卡开始显示了" << endl;
}
};
class LenovoMemory :public Memory
{
public:
void storage()
{
cout << "Lenovo 内存条开始存储了" << endl;
}
};
void test01()
{
cout << "第一台电脑组成：" << endl;
CPU * intelCpu = new intelCPU;
VideoCard * lenovoVC = new LenovoVideoCard;
Memory * lenovoMem = new LenovoMemory;
computer c1(intelCpu, lenovoVC, lenovoMem);
c1.doWork();
cout << "-------------------------" << endl;
cout << "第二台电脑组成：" << endl;
CPU * intelCpu2 = new LenovoCPU;
VideoCard * lenovoVC2 = new intelVideoCard;
Memory * lenovoMem2 = new intelMemory;
computer c2(intelCpu2, lenovoVC2, lenovoMem2);
c2.doWork();
}
int main(){
test01();
system("pause");
return EXIT_SUCCESS;
}
输出：
二、分析与总结
多态、虚函数、继承的综合使用
