多态抽象类实现(c#)

刺骨的言语ヽ痛彻心扉 2022-05-08 05:50 229阅读 0赞

using System;
    namespace Shape {
        public abstract class Shape {//创建一个Shape的抽象类
            public abstract double getL();//定义抽象类中的抽象方法，在抽象类的子类中必须有对应的方法
            public abstract double getS();//所有图形都由周长和面积
        }
        class Triangle : Shape {//三角形
            private double line1,line2,line3;
            public double getLine1()
            {
                return line1;
            }
    
            public void setLine1(double line1)
            {
                this.line1 = line1;
            }
    
            public double getLine2()
            {
                return line2;
            }
    
            public void setLine2(double line2)
            {
                this.line2 = line2;
            }
    
            public double getLine3()
            {
                return line3;
            }
    
            public void setLine3(double line3)
            {
                this.line3 = line3;
            }
    
    
    
            public Triangle(double line1, double line2, double line3)
            {
                
                this.line1 = line1;
                this.line2 = line2;
                this.line3 = line3;
            }
    
            public override double getL() {
                return line1+line2+line3;
            }
            public override double getS() {
                double p = (line1 + line2 + line3) / 2;
                return Math.Sqrt(p*(p-line1)*(p-line2)*(p-line3));
            }
    
        }
        class Circle :Shape{//圆形
            private double radius;
            public static double PI = 3.1415926;
            public double getRadius() {
    		return radius;
    	}
    
    	public void setRadius(double radius) {
    		this.radius = radius;
    	}
    	
    
    	public Circle(double radius) {
    		
    		this.radius = radius;
    	}
    
    
    	public override  double getL() {
    	
    		return PI*radius*2;
    	}
    
    
    	public override double getS() {
    		// TODO Auto-generated method stub
    		return PI*radius*radius;
    	}
    
    
        
        
        }
        class Square : Shape {//正方形
    	private double a;
    
    	public double getA() {
    		return a;
    	}
    
    	public void setA(double a) {
    		this.a = a;
    	}
    
    	public Square(double a) {
    		
    		this.a = a;
    	}
    
    
    	public override double getL() {
    		
    		return a*4;
    	}
    
    
    	public override double getS() {
    	
    		return a*a;
    	}
        
    
    
    	
    	
    
    }
        class TestShape{
            static void Main(string[] args)
            {
                Shape []s= {new Triangle(6,8,10),new Square(1),new Circle(1) };//创建一个Shape数组实例化子类对象
    		    foreach(Shape shape in s) {//运用foreach循环来输出这些图形的周长和面积
                    System.Console.WriteLine(shape.getL()+"\t"+shape.getS());
    		
    		}
                Console.ReadKey();
    
    
            }
        
        
        }
        
    }