java设计一个Circle类,计算面积和周长

Circle类：　　import java.lang.Math;　　public class Circle {　　// 圆半径　　private&nb

#include"stdio.h"constdoubleP=3.14;classCircle{public:virtualdoubleArea();voidR(doubles);doublegetr(

好难!

publicclassRectangle{privatedoublewidth;privatedoublelength;publicdoublegetWidth(){returnwidth;}publ

classcircle{public:circle(doubleradius):_radius(radius){}~circle(void);private:double_radius;public:

packagecircle;publicclassEasy{privatedoubleBj;privatestaticdoublePi=3.1415;publicdoublegetBj(){retur

publicclassTest{\x05publicstaticvoidmain(String[]args){\x05\x05Rectangler=newRectangle(5,4);\x05\x05

classCircle{protecteddoubleradius;publicCircle(){radius=0;}publicCircle(doubleradius){thi

单看你这几句,好像是没错误.你把包含Pointd1=newPoint(2.0,2.0,2.0);Circlec1=newCircle(d1,2.2);这两句的类的代码全部贴出来吧

classcircle{floatradius;floatarea;public:circle(floatr){radius=r;}floatgetarea(void){area=3.14*radiu

随便回复点什么就OK,哈哈!

classcircle{public:circle(){radius=0;}circle(doubleradiuv){radius=radiuv;}voidgetparimeter(){parimet

#includeusingnamespacestd;classCircle{public:Circle(doubler=0):radius(r){}doubleArea(){return3.14*ra

publicclassCircle{privatedoubleradius;publicCircle(doubler){this.radius=r;}publicstaticvoidmain(Stri

用VB程序设计做的随机画十个圆的编程代码（抱歉：就知道这些）Dimr(10)AsInteger,iAsInteger'半径Dimx(10)AsInteger,nAsInteger'半径坐标Dimy(1

#include#definePI3.14159usingnamespacestd;classcircle{private:doubleRadius;public:voidjiandan();};vo

public class Circle { double x,y,r; //无参构造方法 public Circle()

#include <iostream>using namespace std;const double PI = 3.

根据题意实现代码如下：#include <iostream>#include <cmath>#include <string>usin

publicclassNumberCompute{publicdoublecalculate(intn){doubleresult=0;for(inti=1;i