设计模式系列（3）依赖倒转原则实例

太过爱你忘了你带给我的痛 2022-09-30 14:57 105阅读 0赞

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实例代码：

业务层用计算机代替，计算机使用硬盘、CPU、内存，但不依赖于具体厂家，设计Comouter框架和具体的厂家进行

解耦合。

\#include <iostream>  
  
  
using namespace std;  
  
  
class HardDisk  
\{  
public:  
  virtual void work() = 0;  
\};  
  
  
class Memory  
\{  
public:  
  virtual void work() = 0;  
\};  
  
  
class Cpu  
\{  
public:  
  virtual void work() = 0;  
\};  
  
  
//Computer框架和具体的厂商进行解耦合  
class Computer  
\{  
  public:  
    Computer(HardDisk \*harddisk, Memory \*memory, Cpu \*cpu)  
    \{  
      m\_harddisk = harddisk;  
      m\_memory = memory;  
      m\_cpu = cpu;  
    \}  
    void work()  
    \{  
      m\_harddisk->work();  
      m\_memory->work();  
      m\_cpu->work();  
    \}  
  private:  
    HardDisk \*m\_harddisk;  
    Memory \*m\_memory;  
    Cpu \*m\_cpu;  
\};  
  
  
class InterCpu : public Cpu  
\{  
  public:  
    void work()  
    \{  
      cout << "InterCpu ..." << endl;  
    \}  
\};  
  
  
class XSDisk : publicHardDisk  
\{  
  public:  
    void work()  
    \{  
      cout << "XSDisk ..." << endl;  
    \}  
\};  
  
  
class JSDMem : public Memory  
\{  
  public:  
    void work()  
    \{  
      cout << "JSDMem ..." << endl;  
    \}  
\};  
  
  
int main()  
\{  
  HardDisk \*harddisk = NULL;  
  Memory \*memory = NULL;  
  Cpu \*cpu = NULL;  
  
  
  memory = new JSDMem;  
  harddisk = new XSDisk;  
  cpu = new InterCpu;  
  
  
  Computer \*mycomputer = new Computer(harddisk, memory, cpu);  
  mycomputer->work();  
  delete mycomputer;  
  delete cpu;  
  delete mycomputer;  
  delete memory;  
  
  
  return 0;  
\}

[Center]: /images/20220705/8bc2944d824f45c9b18a0b032dd56309.png