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 = ;
            Weigth = ;
            Temperature = ;
        }
        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 < )
                {
                    weigth = ;
                }
                else
                {
                    weigth = value;
                }
            }
            get { return weigth; }
        }
        public double Temperature
        {
            set
            {
                if (value < )
                {
                    temperature = ;
                }
                else
                {
                    temperature = value;
                }
            }
            get { return temperature; }
        }
        public Vertebrate()
        {
            spine = "脊柱";
            weigth = ;
            temperature = ;
        }
        public void Breate()
        {
            Console.WriteLine("呼吸");
        }
        public void Sleep()
        {
            Console.WriteLine("睡觉");
        }
    }
}