面向对象封装练习

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

namespace 封装_方法
{
    class student
    {
        /// <summary>
        /// 学生编号
        /// </summary>
        private string _code;
        public string code
        {
            get { return _code; }
            set{_code=value;}
        }
        
        /// <summary>
        /// 学生 姓名
        /// </summary>
        private string _name;
        public string name
        {
            set { _name = value; }
            get { return _name; }
        }
        /// <summary>
        /// 性别
        /// </summary>
        private string _sex;
        public string sex
        {
            set { _sex = value; }
            get { return _sex; }
        }
        /// <summary>
        /// 分数
        /// </summary>
        private decimal _score;
        public decimal score
        {
            get 
            {
                if (_score < 0 || _score > 100)
                {
                   return _score = 0;
                }
                else
                {
                   return _score ;
                }
            }
            set { _score = value; }
        }

  
        private DateTime _birthday;
        public DateTime birthday
        {
            get { return _birthday; }
            set { _birthday=value;}
        }
        public string birthdaystr
        {
            get { return _birthday.ToString("yyyy年MM月dd日"); }
        }


    }
}

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

namespace 封装_方法
{
    class Program
    {
        static void Main(string[] args)
        {
            
            student st = new student();
            st.code = "101";
            st.name = "张三";
            st.sex = "男";
            st.score = 98;
            st.birthday = DateTime.Parse("1988-8-1");
            Console.WriteLine(st.code+"	"+st.name+"	"+st.sex+"	"+st.score+"	"+st.birthday);

            Console.WriteLine(st.birthdaystr);

            st.score = 106;
            Console.WriteLine(st.score);

            Console.ReadLine();
        }

    }
}