cPP.rar_立体几何

#include <iostream> #include <cmath> using namespace std; const double PI=3.1415926535; class Geometric_shape{//几何图形 public: virtual double perimeter()=0; //周长 virtual double area()=0; //面积 virtual double volume()=0; //体积 virtual void Show(){}; }; class Circle :public Geometric_shape{//圆 double radius; public: Circle(){radius = 0; } Circle(double vv){radius = vv;} double perimeter(){return 2.0*PI*radius;} //周长 double area(){return PI*radius*radius;} //面积 double volume(){return 0;} //体积 void Show(){cout<<"radius="<<radius<<endl;} }; class Rectangle:public Geometric_shape{//矩形 double width,length; public: Rectangle(){width=0; length=0;}//长宽 Rectangle(double wid,double len){ width = wid; length= len; } Rectangle(Rectangle& rr){ width = rr.width; length = rr.length; } double perimeter(){return 2.0*(width+length);} //周长 double area(){return width*length;} //面积 double volume(){return 0;} //体积 void Show(){cout<<"width="<<width<<'\t'<<"length="<<length<<endl;} }; class Triangle:public Geometric_shape{//三角形 double a,b,c; public: Triangle(){a=0;b=0;c=0;} Triangle(double v1,double v2,double v3){a = v1;b = v2;c = v3;} double perimeter(){return a+b+c;} //周长 double area(){ double s=(a+b+c)/2.0; return sqrt(s*(s-a)*(s-b)*(s-c)); } //面积 double volume(){return 0;} //体积 void Show(){cout<<"a="<<a<<'\t'<<"b="<<b<<'\t'<<"c="<<c<<endl;} }; class Box:public Rectangle{//长方体 double height; public: Box(){height=0;} Box(double wid,double len,double heg):Rectangle(wid,len){height=heg;} double volume(){return area()*height;} //体积 }; class Cylinder:public Circle {//圆柱体 double height; public: Cylinder(){height=0;} Cylinder(double vv,double heg):Circle(vv){height=heg;} double volume(){return area()*height;} //体积 }; class Cone: public Circle {//圆锥 double height; public: Cone(){height=0;} Cone(double vv,double heg):Circle(vv){height=heg;} double volume(){return area()*height/3;} //体积 }; class T_pyramid:public Triangle{//三棱锥 double height; public: T_pyramid(){height=0;} T_pyramid(double v1,double v2,double v3,double heg):Triangle(v1,v2,v3){height=heg;} double volume(){return area()*height/3;} //体积 }; class T_prism:public Triangle{//三棱柱 double height; public: T_prism(){height=0;} T_prism(double v1,double v2,double v3,double heg):Triangle(v1,v2,v3){height=heg;} double volume(){return area()*height;} //体积 }; int main(){ Geometric_shape * gs; Circle cc1(10); Rectangle rt1(6,8); Triangle tg1(3,4,5); Box bx1(6,8,3); Cylinder cl1(10,3); Cone cn1(10,3); T_pyramid tpy1(3,4,5,3); T_prism tpr1(3,4,5,3); cc1.Show();//静态 cout<<"圆周长："<<cc1.perimeter()<<'\t'; cout<<"圆面积："<<cc1.area()<<'\t'; cout<<"圆体积："<<cc1.volume()<<endl; gs=&rt1;//动态 gs->Show(); cout<<"矩形周长："<<gs->perimeter()<<'\t'; cout<<"矩形面积："<<gs->area()<<'\t'; cout<<"矩形体积："<<gs->volume()<<endl; gs=&tg1;//动态 gs->Show(); cout<<"三角形周长："<<gs->perimeter()<<'\t'; cout<<"三角形面积："<<gs->area()<<'\t'; cout<<"三角形体积："<<gs->volume()<<endl; gs=&bx1;//动态 gs->Show(); cout<<"长方体底周长："<<gs->perimeter()<<'\t'; cout<<"长方体底面积："<<gs->area()<<'\t'; cout<<"长方体体积："<<gs->volume()<<endl; gs=&cl1;//动态 gs->Show(); cout<<"圆柱体底周长："<<gs->perimeter()<<'\t'; cout<<"圆柱体底面积："<<gs->area()<<'\t'; cout<<"圆柱体体积："<<gs->volume()<<endl; gs=&cn1;//动态 gs->Show(); cout<<"圆锥体底周长："<<gs->perimeter()<<'\t'; cout<<"圆锥体底面积："<<gs->area()<<'\t'; cout<<"圆锥体体积："<<gs->volume()<<endl; gs=&tpy1;//动态 gs->Show(); cout<<"三棱锥底周长："<<gs->perimeter()<<'\t'; cout<<"三棱锥底面积："<<gs->area()<<'\t'; cout<<"三棱锥体积："<<gs->volume()<<endl; gs=&tpr1;//动态 gs->Show(); cout<<"三棱柱底周长："<<gs->perimeter()<<'\t'; cout<<"三棱柱底面积："<<gs->area()<<'\t'; cout<<"三棱柱体积："<<gs->volume()<<endl; return 0; }