namespace ConsoleApp1.entity
{
    public class User
    {
        
        public User(){}

        public User(string name)
        {
            this.name = name;
        }
        
        private string name;
        
        public void setName(string name)
        {
            this.name = name;
        }

        public string getName()
        {
            return this.name;
        }

    }
}

using System;
using ConsoleApp1.Eat;
using ConsoleApp1.Eat.impl;
using ConsoleApp1.entity;

//using 就是导入的意思，ConsoleApp1.impl就是需要导入的类的上一级文件夹的路径，不需要精确的具体文件，

//文件夹路径
namespace ConsoleApp1
{
    //类
    class Program
    {
        private static void Main(string[] args)
        {

            User user = new  User();
            user.setName("小明");
            Console.WriteLine(user.getName());
            
            User user2 = new  User("大爷");
            Console.WriteLine( user2.getName());

        }
    }
}