C#上机 第七周 任务2 判断该物体是否会在水中下沉

/* * 程序头部注释开始   * 程序的版权和版本声明部分   * Copyright (c) 2011, 烟台大学计算机学院学生   * All rights reserved.   * 文件名称：判断该物体是否会在水中下沉                           * 作    者：薛广晨                               * 完成日期：2011  年 10 月  14  日   * 版 本号：x1.0               * 对任务及求解方法的描述部分   * 输入描述：  * 问题描述:编写C#控制台应用程序，在其中创建物体类PhysicalObject，*          通过其私有字段来存放重量和体积，通过公有属性来访问其重量、体积、密度，*          并通过公有方法来判断该物体是否会在水中下沉。* 程序输出：   * 程序头部的注释结束 */using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace xue1{    class Program    {        static void Main(string[] args)        {            PhysicalObject pl1 = new PhysicalObject();            pl1.setWeight(10);            pl1.setVolume(8);            pl1.calculateDensity();            pl1.isSink();            PhysicalObject pl2 = new PhysicalObject(20, 25);            pl2.isSink();            Console.ReadKey();        }    }    class PhysicalObject    {        private double weight;//重量        private double volume;//体积        private double density;//密度        public PhysicalObject()        {            this.weight = 0;            this.volume = 0;            this.weight = 0;        }        public PhysicalObject(double weight, double volume)        {            this.weight = weight;            this.volume = volume;            this.density = weight / volume;        }        public double getWeight()        {            return this.weight;        }        public double getVolume()        {            return this.volume;        }        public double getDensity()        {            return this.density = this.weight / this.volume;        }        public void setWeight(double weight)        {            this.weight = weight;        }        public void setVolume(double volume)        {            this.volume = volume;        }        public void calculateDensity()          {              this.density = this.weight / this.volume;          }         public void isSink()        {            if (this.density > 1)            {                Console.WriteLine("物体的重量为{0}克，体积为{1}立方厘米,密度为{2}克/立方厘米，此物体会在水中下沉。", this.weight, this.volume, this.density);            }            else            {                Console.WriteLine("物体的重量为{0}克，体积为{1}立方厘米,密度为{2}克/立方厘米，此物体不会在水中下沉。", this.weight, this.volume, this.density);            }        }    }}

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