C#创建一个圆类circle定义三个私有字段圆心坐标和半径

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

namespaceEX1_4{publicclassshape{publicdoublePI=3.14;}publicclassRectangle:shape{publicintx,y,s,l;pub

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

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;namespaceConsoleApplic

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;namespacetest{classPro

importjava.util.Scanner;publicclassCircle{\x05privatedoubleradius;publicCircle(){}publicCircle(doubl

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    /// <summary>    /// 基本单词项  &n

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

把这三个类分别放到三个.java文件中,然后编译运行即可.publicclassCircle{privatedoubler;publicCircle(doubler){this.r=r;}public

2种差不多的方法,自己在VC6.0上面试试#include<iostream>usingnamespacestd;#definepi3.14classcircle{public:circl

classCircle{intr,c,s;c=circle(r);s=square(r);}intcircle(intr){intc;c=2*3.1415926*r;return(c);}intsqu

基类的父类,派生类的子类,你可以理解为生活中的亲子关系,这儿子继承了他所有的父亲的样品的物理特性,又具有一定特点的儿子的父亲并没有一个专业的角度来讲,是一个子类可以继承并使用属性和父类的方法,你也可以

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

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

#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

publicclassWb{doublei=5.0;doublefindArea(){returnradius*radiu*3.14159;}publicstaticvoidmain(string[]

privatevoidbutton1_Paint(objectsender,PaintEventArgse){System.Drawing.Drawing2D.GraphicsPathmyGraphi