C#基础

  public enum MyWeekofDay
        {
            Sunday = 7,
            Monday = 1,
            Tuesday = 2,
            Wednesday=3,
            Thursday=4,
            Friday=5,
            Saturday=6
        }

 Console.WriteLine(TestC.MyWeekofDay.Friday);
 Console.WriteLine(TestC.MyWeekofDay.Monday);

int xu = (int)TestC.MyWeekofDay.Saturday;

Console.WriteLine(xu.ToString());

 public struct PhoneBook
        {
            public string name;
            public string phone;
           // public string address;
             public struct address
            {
              public string city;
              public string street;
              public uint no;
            }
  
        }

 for (int i = 1; i < 6; i++)
            {
                TestC.PhoneBook ph = new TestC.PhoneBook();
                TestC.PhoneBook.address add = new TestC.PhoneBook.address();
                add.city = "广州"+string.Format("我是第{0}个城市",i);
                add.street = "林和西";
                add.no = 36;
                ph.name = "张大";
                ph.phone = "15889965878";
                Console.WriteLine(add.city);
            }