实验三 多态性实验C.doc
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实 验 报 告
班组
(系) 计算机 专 业 软件工程
实验名称 多态性试验 指导教师 苗立志 实验类型 验证 实验学时 2 实验时间 二、实验环境(实验设备)
硬件:
软件:
实验原理及内容
一
#includeiostream
using namespace std;
const double pi=3.14;
double a=0;
double v=0;
class Container
{
protected:
double radius;
public:
Container(double r)
{
radius=r;
}
virtual double area()=0;
virtual double volume()=0;
virtual void print ()=0;
};
class Cube :public Container
{
public:Cube(double r):Container(r){}
double area()
{
return a=6*radius*radius;
}
double volume()
{
return v=radius*radius*radius;
}
void print()
{
cout正方体的表面积:aendl;
cout正方体的体积aendl;
}
};
class Sphere:public Container
{
public:Sphere(double r):Container(r){}
double area()
{
return a=4*pi*radius*radius;
}
double volume()
{
return v=4/3*pi*radius*radius*radius;}
void print()
{
cout球的表面积:aendl;
cout球体积:vendl;
}
};
class Cylinder:public Container
{
public:Cylinder(double r,double h):Container(r)
{
high=h;
}
double area()
{
return a=2*pi*radius*radius+pi*(2*radius)*high;
}
double volume()
{
return v=pi*radius*radius*high;
}
void print()
{
cout圆柱的表面积:aendl;
cout圆柱的体积:vendl;
}
protected : double high;
};
void main ()
{
Container*p;
Cube Cu (2);
Sphere Sp(2);
Cylinder Cy(4,5);
p=Cu;
p-area();
p-volume();
p-print();
p=Sp;
p-area();
p-volume();
p-print();
p=Cy;
p-area();
p-volume();
p-print();
}
二 #includeiostream.h
class Complex
{
private:
float real;
float imag;
public:
Complex(float r=0,float i=0)
{
real=r;
imag=i;
}
void print()
{
coutreal+imagendl;
}
Complex operator*(Complex c1);
Complex operator/(Complex c1);
Complex operator++(int);
friend Complex operator+(const Complex c1,const Complex c2);
friend Complex operator-(const Complex c1,const Complex c2);
friend Complex operator++(Complex c1);
};
Complex Complex::operator*(Complex c1)
{
real=real*c1.real;
imag=imag*c1.
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