using System;

using System.Collections.Generic;

using System.Text;

namespace test

{

    class Program

    {

        static void Main(string[] args)

        {

            Date birthday = new Date(, , , new Time(, , ));//传入的第四个参数是对象

            Console.WriteLine("我出生于{0}年{1}月{2}日{3}", birthday.year, birthday.month, birthday.day, birthday.clock.To24());//调用第四个对象的方法

        }

    }

    class Time

    {

        private int hour;

        private int minute;

        private int second;

        private void SetTime(int h, int m, int s)

        {

            Hour = h;//属性赋值

            Minute = m;//属性赋值

            Second = s;//属性赋值

        }

        public Time()//无参构造函数

        {

            SetTime(, , );

        }

        public Time(int hourvalue)//一参构造函数

        {

            SetTime(hourvalue, , );

        }

        public Time(int hourvalue, int minutevalue, int secondvalue)//三参构造函数

        {

            SetTime(hourvalue, minutevalue, secondvalue);

        }

        public int Hour//属性赋值

        {

            set { hour = (value >=  && value <=  ? value : ); }

            get { return hour; }

        }

        public int Minute//属性赋值

        {

            set { minute = (value >=  && value <=  ? value : ); }

            get { return minute; }

        }

        public int Second//属性赋值

        {

            set { second = (value >=  && value <=  ? value : ); }

            get { return second; }

        }

        public string To24()//显示24小时制方法

        {

            string output = Hour + ":" + Minute + ":" + Second;

            return output;

        }

        public string To12()//显示24小时制方法

        {

            string output;

            if (Hour >= )

            {

                output = Hour %  + ":" + Minute + ":" + Second + "PM";

            }

            else

            {

                output = Hour %  + ":" + Minute + ":" + Second + "AM";

            }

            /*下面也是可以的

            int HOURTEMP = (Hour == 0 || Hour == 12) ? 00 : （Hour % 12）;

            string PMAM = (Hour < 12) ? "AM" : "PM";

            string output1 = HOURTEMP + ":" + Minute + ":" + Second + PMAM;*/

            return output;

        }

    }

    class Date

    {

        public int year;

        public int month;

        public int day;

        public Time clock;//对象定义为成员

        public Date(int yearvalue, int monthvalue, int dayvalue, Time clockvalue)

        {

            year = yearvalue;

            month = monthvalue;

            day = dayvalue;

            clock = clockvalue;

        }

    }

}