继承

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace day06
{
    public class Fu
    {
        public string Name { get; set; }
        public int age { get; set; }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace day06
{
    public class Zi1:Fu
    {
        public string dd { get; set; }
        public void qq() { 
        Console.WriteLine("我叫{0},年龄{1},健康{2}",Name,age,dd);
        }
        
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace day06
{
    class Program
    {
        static void Main(string[] args)
        {
            Zi1 zi = new Zi1();
            zi.Name = "hehe";
            zi.age = 10;
            zi.dd = "aaaaaaaa";
            zi.qq();   
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace day06
{
    public class zi21:Fu
    {
        public string aa { get; set; }

        public void bb()
        {
            Console.WriteLine("我叫{0},年龄{1},健康{2}", Name, age, aa);
        }
    }
}