C# 派生和继承（派生类与基类）

using System;using System.Collections.Generic;using System.Text;namespace 继承{    class Program    {        static void Main(string[] args)        {            Mammal mammal = new Mammal();            Console.WriteLine("我是一只哺乳动物");            mammal.Scukle();            mammal.Breate();            mammal.Sleep();            mammal.Message();        }    }    class Mammal : Vertebrate//派生类：基类    {        private string arms;        private string legs;        private int age;        public int Age        {            set { age = value; }            get { return age; }        }        public Mammal()        {            arms = "前肢";            legs = "后肢";            Age = 0;            Weigth = 10;            Temperature = 37;        }        public void Scukle()        {            Console.WriteLine("哺乳");        }        public void Message()        {            Console.WriteLine("体重：{0}", Weigth);            Console.WriteLine("年龄：{0}", Age);            Console.WriteLine("体温：{0}", Temperature);            Console.WriteLine("我有{0}和{1}", arms, legs);        }    }}

using System;using System.Collections.Generic;using System.Text;namespace 继承{    class Vertebrate    {        private string spine;        private double weigth;        private double temperature;        public double Weigth        {            set            {                if (value < 0)                {                    weigth = 0;                }                else                {                    weigth = value;                }            }            get { return weigth; }        }        public double Temperature        {            set            {                if (value < 0)                {                    temperature = 0;                }                else                {                    temperature = value;                }            }            get { return temperature; }        }        public Vertebrate()        {            spine = "脊柱";            weigth = 0;            temperature = 0;        }        public void Breate()        {            Console.WriteLine("呼吸");        }        public void Sleep()        {            Console.WriteLine("睡觉");        }    }}