例程实作
----庖丁解羊（下）
#include <iostream>
#include <string>
using namespace std;
class Part{
public:
virtual void Draw()=0;
virtual ~Part(){}
};
class Shape{
public:
Shape( string const& _s ):data( _s ){}
void Draw( unsigned color )
{
cout << data << " with color :" << hex << color << endl;
} //提供了借口，但是没有实现绘图
private:
string data;
//读者可以自己实现绘图部分
};
//绒毛，骨架，胸，腹，背，眼睛，鼻子，嘴巴，心，脾，肝，肠，肾，脚，尾巴，耳朵，肺，胃{{部分，显示=轮廓+颜色}，轮廓[1]，颜色[1]}
class BasePart : public Part{
public:
BasePart( string const& _s , unsigned _c ):shape( _s ),color( _c ){}
void Draw()
{
shape.Draw( color );
}
private:
Shape shape;
unsigned color;
};
//绒毛
class Floss : public BasePart{
public:
Floss( ):BasePart("Floss " ,0){}
};
//骨架
class Skelecton : public BasePart{
public:
Skelecton( ):BasePart("Skelecton " ,0){}
};
//胸
class Bosom : public BasePart{
public:
Bosom( ):BasePart("Bosom " ,0){}
};
//腹
class Abdomen : public BasePart{
public:
Abdomen ( ):BasePart("Abdomen " ,0){}
};
//背
class Backside: public BasePart{
public:
Backside ( ):BasePart("Backside " ,0){}
};
//眼睛
class Eye : public BasePart{
public:
Eye ( ):BasePart("Eye " ,0){}
};
//耳朵
class Ear : public BasePart{
public:
Ear ( ):BasePart("Ear " ,0){}
};
//鼻子
class Nose : public BasePart{
public:
Nose ( ):BasePart("Nose " ,0){}
};
//嘴巴
class Mouth : public BasePart{
public:
Mouth ( ):BasePart("Mouth " ,0){}
};
//尾巴
class Stern : public BasePart{
public:
Stern ( ):BasePart("Stern " ,0){}
};
//胡子
class Goatee : public BasePart{
public:
Goatee ( ):BasePart("Goatee " ,0){}
};
//心
class Heart : public BasePart{
public:
Heart ( ):BasePart("Heart " ,0){}
};
//脾
class Spleen : public BasePart{
public:
Spleen ( ):BasePart("Spleen " ,0){}
};
//肝
class Liver : public BasePart{
public:
Liver ( ):BasePart("Liver " ,0){}
};
//肺
class Lung : public BasePart{
public:
Lung ( ):BasePart("Lung " ,0){}
};
//胃
class Stomach : public BasePart{
public:
Stomach ( ):BasePart("Stomach " ,0){}
};
//肠
class Intestine : public BasePart{
public:
Intestine ( ):BasePart("Intestine " ,0){}
};
//肾
class Kidney : public BasePart{
public:
Kidney ( ):BasePart("Kidney " ,0){}
};
//脚
class Leg : public BasePart{
public:
Leg ( ):BasePart("Leg " ,0){}
};
//肢体{{部分, 显示=显示肢体}，脚[1]，绒毛[n]，骨架[1]}
class Limb : public Part{
public:
void Draw()
{
cout << "Has a ";
leg.Draw();
cout << "Has a ";
skelecton.Draw();
cout << "Has some ";
floss[0].Draw();
}
private:
Leg leg;
Floss floss[10];
Skelecton skelecton;
};
//前肢，后肢{{肢体}}
class Forelimb : public Limb{
public:
void Draw()
{
cout<< "Forelimb " << endl;
Limb::Draw();
}
};
class Backlimb : public Limb{
public:
void Draw()
{
cout<< "Backlimb " << endl;
Limb::Draw();
}
};
//四肢{{部分，显示=显示四肢}，前肢[2]，后肢[2]}
class Extermity : public Part{
public:
void Draw()
{
cout<< "Has a Left ";
Leftforelimb.Draw();
cout<< "Has a Right ";
Rightforelimb.Draw();
cout<< "Has a Left ";
Leftbacklimb.Draw();
cout<< "Has a Right ";
Rightbacklimb.Draw();
}
private:
Forelimb Leftforelimb,Rightforelimb;
Backlimb Leftbacklimb,Rightbacklimb;
};
//内脏{{部分，显示=显示内脏}，心[1]，脾[1]，肝[1]，肺[2]，胃[1]，肠[n]，肾[2]}
class Harslet: public Part{
public:
void Draw()
{
cout << "Harslet " <<endl;
cout << "Has a ";
heart.Draw();
cout << "Has a ";
spleen.Draw();
cout << "Has a ";
liver.Draw();
cout << "Has a Left ";
Leftlung.Draw();
cout << "Has a Right ";
Rightlung.Draw();
cout << "Has a ";
stomach.Draw();
cout << "Has Some ";
intestine[0].Draw();
cout << "Has a Left ";
Leftkidney.Draw();
cout << "Has a Right ";
Rightkidney.Draw();
}
private:
Heart heart;
Spleen spleen;
Liver liver;
Lung Leftlung , Rightlung;
Stomach stomach;
Intestine intestine[10];
Kidney Leftkidney,Rightkidney;
};
//五官{{部分，显示=显示五官}，耳朵[2]，眼睛[2]，鼻子[1]，嘴巴[1]}
class Face : public Part{
public:
void Draw()
{
cout << "Face " <<endl;
cout << "Has a Left ";
Leftear.Draw();
cout << "Has a Right ";
Rightear.Draw();
cout << "Has a Left ";
Lefteye.Draw();
cout << "Has a Right ";
Righteye.Draw();
cout << "Has a ";
nose.Draw();
cout << "Has a ";
mouth.Draw();
}
private:
Ear Leftear,Rightear;
Eye Lefteye,Righteye;
Nose nose;
Mouth mouth;
};
//尾部{{部分，显示=显示尾部}，尾巴[1]，绒毛[n]，骨架[1]}
class Tail: public Part{
public:
void Draw()
{
cout << "Tail " <<endl;
cout << "Has a ";
stern.Draw();
cout << "Has a ";
skelecton.Draw();
cout << "Has some ";
floss[0].Draw();
}
private:
Stern stern;
Floss floss[10];
Skelecton skelecton;
};
//躯体{{部分，显示=显示躯体}，胸[1]，腹[1]，背[1]，内脏[1]，绒毛[n]，骨架[1]}
class Body: public Part{
public:
void Draw()
{
cout << "Body " <<endl;
cout << "Has a ";
bosom.Draw();
cout << "Has a ";
abdomen.Draw();
cout << "Has a ";
backside.Draw();
cout << "Has a ";
harslet.Draw();
cout << "Has a ";
skelecton.Draw();
cout << "Has some ";
floss[0].Draw();
}
private:
Bosom bosom;
Abdomen abdomen;
Backside backside;
Harslet harslet;
Floss floss[10];
Skelecton skelecton;
};
//脑袋{{部分，显示=显示脑袋}，五官[1]，胡子[n]，绒毛[n]，骨架[1]}
class Head: public Part{
public:
void Draw()
{
cout <<"Head " << endl;
cout << "Has a ";
face.Draw();
cout << "Has a ";
skelecton.Draw();
cout << "Has some ";
goatee[0].Draw();
}
private:
Face face;
Goatee goatee[10];
Skelecton skelecton;
};
//山羊{{部分，显示=显示山羊}，脑袋[1]，躯体[1]，四肢[1]，尾部[1]}
class Sheep: public Part{
public:
void Draw()
{
cout << "Sheep " << endl;
cout << "Has a ";
head.Draw();
cout << "Has a ";
body.Draw();
cout << "Has a ";
extermity.Draw();
cout << "Has a ";
tail.Draw();
}
private:
Head head;
Body body;
Extermity extermity;
Tail tail;
};
void main(void)
{
Sheep sheep;
sheep.Draw();
cin.get();
}
结果是：
Sheep
Has a Head
Has a Face
Has a Left Ear with color :0
Has a Right Ear with color :0
Has a Left Eye with color :0
Has a Right Eye with color :0
Has a Nose with color :0
Has a Mouth with color :0
Has a Skelecton with color :0
Has some Goatee with color :0
Has a Body
Has a Bosom with color :0
Has a Abdomen with color :0
Has a Backside with color :0
Has a Harslet
Has a Heart with color :0
Has a Spleen with color :0
Has a Liver with color :0
Has a Left Lung with color :0
Has a Right Lung with color :0
Has a Stomach with color :0
Has Some Intestine with color :0
Has a Left Kidney with color :0
Has a Right Kidney with color :0
Has a Skelecton with color :0
Has some Floss with color :0
Has a Has a Left Forelimb
Has a Leg with color :0
Has a Skelecton with color :0
Has some Floss with color :0
Has a Right Forelimb
Has a Leg with color :0
Has a Skelecton with color :0
Has some Floss with color :0
Has a Left Backlimb
Has a Leg with color :0
Has a Skelecton with color :0
Has some Floss with color :0
Has a Right Backlimb
Has a Leg with color :0
Has a Skelecton with color :0
Has some Floss with color :0
Has a Tail
Has a Stern with color :0
Has a Skelecton with color :0
Has some Floss with color :0
邪门的是，这个程序我从头到尾打完以后，第一遍运行，居然没有错误，连误输入的错误都没有，这是不是说，我的指法又上层楼呢^o^。
虽然我提供了源程序，但是我希望还是认真的输入一遍，一来加深印象，二来可以练习指法。程序员的指法也是生产力啊。
不过这个程序只是演示性的，使用了固定的数组和变量，事实上弹性还远远不够，有一些属性的数目是可变的，比如羊毛是会掉的，瘸了一条腿的羊还是羊，所以重视弹性的话，这些变量都要改为指针可以动态的增减。
好了，说了半天相信读者也累了，还是让大家自己体会吧。
2001/9/27
丁宁
