求矩形边长，面积及周长（c#实现）

来源：互联网发布：mysql 列表查询优化编辑：程序博客网时间：2024/05/16 18:09

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace ConsoleApplication1{    class CPoint    {        public int x, y;        public CPoint()        { }        public CPoint(int x, int y)        {            this.x = x;            this.y = y;        }    }    class CLine:CPoint    {        public static double Getlength(CPoint p1,CPoint p2)        {            return Math.Sqrt ((p1.x - p2.x) * (p1.x - p2.x) + (p1.y - p2.y) * (p1.y - p2.y));        }    }    class CRect : CLine    {                public static double Getarea(CPoint p1,CPoint p2,CPoint p3)        {            return  (Getlength(p1,p2)*Getlength(p2,p3));        }        public static double Getzc(CPoint p1,CPoint p2,CPoint p3)        {            return (2*(Getlength(p1,p2)+Getlength(p2,p3)));        }    }    class Program    {        static void Main(string[] args)        {            CPoint a = new CPoint(2,3);            CPoint b = new CPoint(4,5);            CPoint c = new CPoint(1,3);            Console.WriteLine("距离{0}，面积{1}，长度{2}",CLine.Getlength(a,b),CRect.Getarea(a,b,c),CRect.Getzc(a,b,c));            Console.ReadKey();        }    }}

写的有些繁琐，而且有个比较大缺陷就是用户不能直接输入三个点的值，不太好。

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