【C#】上机实验三

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 
 6 namespace MyProject
 7 {
 8     class Program
 9     {
10         static void Main(string[] args)
11         {
12             // 显示"08:47:00"
13             TimePeriod time = new TimePeriod(8, 47, 0);
14             Console.WriteLine( time );
15 
16             // 显示"12:00:00"
17             time.Hour = 10;
18             time.Minute = 58;
19             time.Second = 59;
20             time.Add_Hour(1);
21             time.Add_Minute(1);
22             time.Add_Second(1);
23             Console.WriteLine( time );
24 
25             // 显示"01:02:03"
26             time.Hour = time.Minute = time.Second = 0;
27             time.Add_Second( 3600 + 120 + 3 );
28             Console.WriteLine(time);
29 
30             // 显示"Day + 1 , 01:02:03"
31             time.Hour = time.Minute = time.Second = 0;
32             time.Add_Second(25 * 3600 + 120 + 3);
33             Console.WriteLine(time);
34         }
35     }
36     class TimePeriod
37     {
38         //类中定义 时,分,秒 3个私有字段
39         private int hour;
40         private int minute;
41         private int second;
42 
43         //类中定义3个公有属性 分别对应上述3个字段
44         public int Hour { get { return hour; } set { hour = value; } }
45         public int Minute { get { return minute; } set { minute = value; } }
46         public int Second { get { return second; } set { second = value; } }
47 
48         //类中定义3个公有方法分别将时间增加n秒,n分,n时.
49         public void Add_Hour( int hour)
50         {
51             this.hour += hour ;
52             if( this.hour >= 24)
53             {
54                 Console.Write( "Day + {0} ," , this.hour/24 );
55                 this.hour %= 24;
56             }
57         }
58         public void Add_Minute( int minute)
59         {
60             this.minute += minute;
61             if( this.minute >= 60)
62             {
63                 Add_Hour(this.minute / 60);
64                 this.minute %= 60;
65             }
66         }
67         public void Add_Second( int second)
68         {
69             this.second += second;
70             if( this.second >= 60)
71             {
72                 Add_Minute(this.second / 60);
73                 this.second %= 60;
74             }
75         }
76 
77         //类中定义3个参数的构造函数,初始化3个私有字段
78         public TimePeriod( int hour , int minute, int second)
79         {
80             this.hour = hour;
81             this.minute = minute;
82             this.second = second;
83         }
84         public TimePeriod() : this(0, 0, 0) { }
85 
86         //类中定义公有方法输出:时,分,秒,3个字段的值
87         public override string ToString()
88         {
89             return string.Format( "{0:d2}:{1:d2}:{2:d2}",hour,minute,second);
90         }
91     }
92 }

时间类的练习

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Text;
  5 
  6 namespace MyProject
  7 {
  8     class Program
  9     {
 10         static void Main(string[] args)
 11         {
 12             #region 测试Shape类及方法
 13             /*  1、默认构造函数 对Length,breadth进行赋值
 14              *  2、利用属性进行输出后,再利用属性进行赋值
 15              *  3、最后利用ToString 输出对应的对象信息 
 16              */
 17             #endregion
 18 
 19             Shape s1 = new Shape(1, 2);
 20             Console.WriteLine("s1->Length:{0} , breadth:{1}",s1.Length,s1.Breadth);
 21             s1.Length = 3;
 22             s1.Breadth = 4;
 23             Console.WriteLine(s1);
 24 
 25             #region 测试Box类及方法
 26             /*  1、默认构造函数 对Length,breadth,height进行赋值
 27              *  2、利用属性进行输出后,再利用属性进行赋值
 28              *  3、最后利用ToString 输出对应的对象信息 
 29              */
 30             #endregion
 31 
 32             Box b1 = new Box(1, 2, 3);
 33             Console.WriteLine("b1->Length :{0}\tbreadth :{1}\theight :{2}",b1.Length,b1.Breadth,b1.Height);
 34             b1.Length = 3;
 35             b1.Breadth = 4;
 36             b1.Height = 5;
 37             Console.WriteLine(b1);
 38 
 39             #region 测试多态
 40             /*
 41              * 多态体现在,父指针,将子类实例化.
 42              */
 43             #endregion
 44             Shape b2 = new Box(2, 3, 4);
 45             Console.WriteLine(b2);
 46 
 47         }
 48     }
 49     
 50     public class Shape
 51     {
 52         private int length;
 53         private int breadth;
 54 
 55         public int Length { get => length; set => length = value; }
 56         public int Breadth { get => breadth; set => breadth = value; }
 57 
 58         public Shape ( int length , int width)
 59         {
 60             this.Length = length;
 61             this.Breadth = Breadth; 
 62         }
 63         public Shape():this(0, 0) { }
 64         public override string ToString()
 65         {
 66             return string.Format("Shape -> length:{0}\t Breadth:{1}", length, Breadth);
 67         }
 68         #region 主要注释
 69         /*
 70          * 类中的字段属性封装
 71          * 构造函数 : 两参数,零参数
 72          * 重载ToString类
 73          */
 74         #endregion
 75     }
 76 
 77     public class Box : Shape
 78     {
 79         private int height;
 80         public int Height { get => height; set => height = value; }
 81         public Box(int length, int Breadth, int height):base(length, Breadth)
 82         {
 83             this.height = height;
 84         }
 85         public Box() : this(0, 0, 0) { }
 86         public override string ToString()
 87         {
 88             return string.Format("Box -> length:{0}\t breadth:{1}\t height:{2}", Length, Breadth, height);
 89         }
 90         #region Box类
 91         /*
 92          *  Box继承了Shape的所有结构
 93          *
 94          *  1、无法直接访问父类的字段,但可通过"属性"间接访问
 95          *  2、在重载 构造函数时，可以直接调用父类的构造函数实现部分字段的赋值
 96          *  
 97          */
 98         #endregion
 99     }
100 }

类及继承练习