rectangle类的width

类：class Rectanglr { private double length;private double width;public Rectanglr(double length,double width){ this.length = length;this.width = width;} public double area(){ return this.length* this.width...

/* C#版 */ class Rectangle { private Double _length;private Double _width;public Double Length { get { return _length; } set { if (value < 0) throw new Exception("Length不能为负"); _length = value...

include<iostream> using namespace std;class Rect { private:int length;int width;int perim;public:Rect(){ length =1;width =1;} Rect(int length,int width){ this->length = length;this->width = width;} ...

:cout<<"length:"<<length<<std::endl; std::cout<<"width:"<<width<<std::endl;}void main(){ Rectangle a; a.show();//没有获得值之前打印的是默认值 a.setlength(10); a....

include<iostream> include<string> using namespace std;class Rectangle{ double length,width;public:Rectangle(){ length=width=0; } Rectangle(double pl,double pw){ set_length(pl); set_width(pw); } void set_...

include<iostream> using namespace std;class Rectangle {private:float length,width;public:void setRectangle(float &m,float &n){length=m; width=n; };float girth(){return 2*(length+width);};float area()...

public class Rectangle { // 矩形的长和宽 private double width;private double height;// 构造方法可以多个，只要参数不一样就可以 // 默认构造方法 public Rectangle() { } public Rectangle(double width, double ...

//Shape类public abstract class Shape {public abstract int getArea();}//Rectangle类public class Rectangle extends Shape{private int width;private int height;public Rectangle(int width, int height) {this.width = ...

[5] rectHeight=value [6]这个在注释语句里我也不清楚要怎么填，不会是题目搞错了吧。-_-||| [7] return 2 *( rectWidth+ rectHeight)[8] return rectWidth * rectHeight [9] ，[10] 应该是对rectl的width ...