Tenth to tenth Week Item 2: Point-circle-cylinder Group Design (3)



Questions and codes:

#include <iostream>using namespace Std;const double pi=3.14;class point{public:point (int xx,int yy): X (xx), Y (        yy) {} void setx (int xx) {x=xx;}        void sety (int yy) {y=yy;}        int Getx () {return x;} int gety () {return y;}    Private:int x; int y;}; Class Circle:public point{public:circle (int xx,int yy,double RR):P oint (Xx,yy), R (RR) {} void area () {area=    Pi*r*r;    The area of void PrintArea () {cout<< "circle is:" <<area<<endl;    } double Getarea () {return area;} Double Getr () {return r;}    Private:double R; Double area;}; Class Cylinder:public Circle{public:cylinder (int xx,int yy,double rr,double hh): Circle (XX,YY,RR), H (HH) {} void Area1    () {Area1=getarea () *h;    } void Volume () {Volume=getarea () *2+2*pi*getr () *h;        The volume of void print () {cout<< "cylinder is:" <<area1<<endl;    cout<< "The surface area of the cylinder is:" <<volume<<endl;    }private:double h; Double area1; double volume;};    int main () {Cylinder C (1,2,3,4);    Cout<<c.getx () << "<<c.gety" () <<endl;    C.printarea ();    C.print (); return 0;}

Operation Result:

Summary of Knowledge points:

From this program I learned about a particularly complex program, to learn steps to achieve the idea.

Learning experience:

Don't be discouraged when you have a problem, think more and find a way to solve it.



Tenth to tenth Week Item 2: Point-circle-cylinder Group Design (3)