编写一个圆的类,半径作为圆的属性,定义一个方法用于计算圆的周长,定义另一个方法用

用java语言描述：publicclassCircle{privatedoubleRadius;//半径publicCircle(){}publicCircle(doubleradius){Radiu

importjava.io.BufferedReader;importjava.io.InputStreamReader;publicclasstest{publicstaticvoidmain(St

编写一个程序,要求输入圆的半径,求圆的周长,面积.并输出结果.PS:本人是已经测试过了importjavax.swing.JOptionPane;classaccount{public

importjava.util.Scanner;publicclassTest{publicstaticvoidmain(Stringagrs[]){Scannera=newScanner(Syste

importjava.util.Scanner;classRound{\x09publicdoubleperimeter(doubleradius){\x09\x09returnradius*2;\x

voidmain(){floatr,s,l;floatpi=3.1415;printf("输入一个圆的半径:\n");scanf("%f",&r);if(

function[SV]=sphere(R)%定义函数S=pi*R^2;%求圆的面积V=4/3*pi*R^3;%求求的体积调用方法[ab]=sphere(1)

public class Area  {public static void main(String[] args)&

什么语言?给你个C#的,根据你需要的语言,改动一下privatedoublemiji(doublebanjing){doublepi=3.14;returnpi*banjing*banjing;}再问

楼上的方法应该没错,可感觉对于表现java面向对象的特性没有表现出来,下面是我写的,应该非常清楚明了了importjava.io.BufferedReader;importjava.io.InputS

dimrassingle,sassingler=inputbox("请输入圆的半径：")s=3.14159*r^2print"圆的面积是：";s

PrivateSubCommand1_Click()DimrAsSingleDimcAsSingleDimsAsSingler=Val(Text1.Text)c=2*3.14159*rs=3.1415

（法1）#includeusingnamespacestd;#definePI3.1415926classCircle{doubler;public:Circle(doubleR=0){r=R;}vo

第一段程序：m=pie*r*r,这句逻辑上有问题,m为输入值,r未赋值,默认0,for(i=1;i

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

2*32*3.14/4=50.2450.24/3.14=1616/2=8同学你好,如果问题已解决,记得右上角采纳哦~~~您的采纳是对我的肯定~谢谢哦

classCircle{privatedoubleradius;publicCircle(){this.radius=0;}publicCircle(doubler){this.radius=r;}p

#includeclasscircle{private:intr;public:voidinput(){cout

Console.WriteLine("请输入圆的半径");intr=int.Parse(Console.ReadLine());doublecircle=2*3.14*r;doublearea=3.1

publicinterfaceCircle{doublearea(doubler);}publicclassCircleImplimplementsCircle{publicdoublearea(do