第五次实验参考代码
代码比我们实验的要求要多一些，大家仔细看下#include <iostream.h>#include <math.h>const double PI=3.14;class Geometric_shape{public:Geometric_shape(){}virtual double Get_Girth()=0;//Öܳ¤virtual double Get_Area()=0; //Ãæ»ývirtual double Get_Volume()=0; //Ìå»ývirtual double Get_SurArea()=0; //±íÃæ»ývirtual void print()=0;};class Rectangle:public Geometric_shape{protected:double length,width;public:Rectangle(double l,double w):length(l),width(w){}double Get_Girth(){return 2 * (width + length);}double Get_Area(){return width * length;}virtual double Get_Volume(){return 0.0;}virtual double Get_SurArea(){return 0.0;}void print(){cout<<"The Rectangle's Girth is:"<<Get_Girth()<<endl;cout<<"The Rectangle's Area is:"<<Get_Area()<<endl;}};class Circle:public Geometric_shape{protected:double radius;public:Circle(double l):Geometric_shape(),radius(l){}double Get_Girth(){return 2 * PI * radius;}double Get_Area(){return PI * radius * radius;}virtual double Get_Volume(){return 0.0;}virtual double Get_SurArea(){return 0.0;}void print(){cout<<"The Circle's Girth is:"<<Get_Girth()<<endl;cout<<"The Circle's Area is:"<<Get_Area()<<endl;}};class Triangle:public Geometric_shape{protected:double len1,len2,len3;public:Triangle(double a,double b,double c){len1 = a;len2 = b;len3 = c;}double Get_Girth(){return len1 + len2 + len3;}double Get_Area(){double p = Get_Girth() / 2;return sqrt(p * (p - len1) * (p - len2) * (p - len3));}virtual double Get_Volume(){return 0.0;}virtual double Get_SurArea(){return 0.0;}void print(){cout<<"The Triangle's Grith is:"<<Get_Girth()<<endl;cout<<"The Triangle's Area is:"<<Get_Area()<<endl;}};class Box:public Rectangle{protected:double height;public:Box(double l,double w,double h):Rectangle(l,w),height(h){}double Get_SurArea(){return 2 * (length * width + width * height + height * length);}double Get_Volume(){return length * width * height;}void print(){cout<<"The Box's SurArea is:"<<Get_SurArea()<<endl;cout<<"The Box's volume is:"<<Get_Volume()<<endl;}};class Column:public Circle{private:double height;public:Column(double l,double h):Circle(l),height(h){}double Get_SurArea(){double a;a = 2 * Get_Area() + 2 * PI * radius * height;return a;}double Get_Volume(){return Get_Area() * height;}void print(){cout<<"The Cylinder's SurArea is:"<<Get_SurArea()<<endl;cout<<"The Cylinder's Volume is:"<<Get_Volume()<<endl;}};class Ball:public Circle{public:Ball(double l):Circle(l){}double Get_SurArea(){return 4.0 * Get_Area();}double Get_Volume(){return 4.0 * Get_Area() * radius /3.0;}void print(){cout<<"The Cone's SurArea is:"<<Get_SurArea()<<endl;cout<<"The Cone's Volume is:"<<Get_Volume()<<endl;}};void fun(Geometric_shape &p){p.print();}void main(){Circle c(2.5);fun(c);Rectangle r(2.4,3.6);fun(c);Ball b(3.5);fun(b);Column co(3.5,5.3);fun(co);Triangle t(2.3,4.2,3.4);fun(t);Box bo(3,5.2,3.6);fun(bo);}
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