C#类和对象1一个类的学习实例

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为了巩固对类的理解,我们来设计一个关于时间的类,该类的成员如下表:

访问权限	类型	成员	说明
private	int	hour	私有变量
private	int	minute	]私有变量
private	int	second	私有变量]
public	int	Hour	变量hour的属性
public	int	Minute	变量minute的属性
public	int	Second	变量second的属性
public	void	SetTime()	私有函数,用来设置时间
private	void	Time()	构造函数,无参数
public	void	Time(int hourValue)	构造函数,一个参数
public	void	Time(int hourValue,int minuteValue,secondValue)	构造函数,三个参数
public	void	ToString24()	用24小时制格式输出时间
public	void	ToString12()	用12小时制格式输出时间

我们先编写一个Time类:

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

namespace Time
{
    class Time
    {
        //私有成员
        private int hour;
        private int minute;
        private int second;
        private void SetTime(int h,int m,int s)
    {
        Hour =h;
        Minute = m;
        Second = s;
    }
        //构造函数，无参数
        public Time()
        {
            SetTime(0, 0, 0);
        }
        //构造函数，一个参数
        public Time(int hourValue)
        {
            SetTime(hourValue, 0, 0);
        }
    //构造函数，三个参数
        public Time(int hourValue, int minuteValue, int secondValue)
        {
            SetTime(hourValue ,minuteValue,secondValue);
        }
        //属性
        public int Hour
        {
            get
            {
                return hour;
            }
            set
            { 
                hour =((value >=0&&value<24?value :0));
            }
        }
            //属性Minute
            public int Minute
            {
            get
            {
            return minute;
            }
                set 
                {
                    minute =((value >=0&&value<60)?value:0);
                }
            }
                  //属性Second
            public int Second
            {
            get
            {
            return second;
            }
                set 
                {
                    second =((value >=0&&value<60)?value:0);
                }
            }
    //函数，返回24小时
            public string ToString24()
            {
                string output = Hour + ":" + Minute + ":" + Second;
                return output;
            }
        //函数，返回12小时制时间
            public string ToString12()
            { 
            int hourTemp =((Hour ==12)||(Hour ==0))?12:(Hour%12);
                string AMPM=(Hour <12?"AM":"PM");
                string output = hourTemp + ":" + Minute + ":" + Second + AMPM;
                return output;
            }
        }
    }

然后,在program.cs中运行下列代码:

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

namespace Time
{
    class Program
    {
        static void Main(string[] args)
        {
            Time time1 = new Time();
            Time time2 = new Time(22);
            Time time3 = new Time(22,36,30);
            Console.WriteLine("time1:");
            Console.WriteLine("24小时制时间："+ time1.ToString24());
            Console.WriteLine("12小时制时间" + time1.ToString12() + "\n");
            Console.WriteLine("time2:");
            Console.WriteLine("24小时制时间：" + time2.ToString24());
            Console.WriteLine("12小时制时间" + time2.ToString12() + "\n");
            Console.WriteLine("time3:");
            Console.WriteLine("24小时制时间：" + time3.ToString24());
            Console.WriteLine("12小时制时间" + time3.ToString12() + "\n");
            Date birthday = new Date(1981, 12, 3, new Time(16,30,0));
            Console.Write("我出生于{0}年{1}月{2}日{3}。", birthday.year, birthday.month, birthday.day, birthday.clock.ToString24());


        }
    }
}

运行结果如下:

alai318

膜拜中....！

创行电商学院

的1111111111