C# (CSharp) lab_16_abstract_class HolidayWithTravel示例

示例#1

 public static string AmazingExtraStringMethod(this HolidayWithTravel s)
 {
     return("---> add your comment");
 }

示例#2

文件： Program.cs 项目： MylesMuda/2019-09-c-sharp-labs

 static void Main(string[] args)
 {
     var h = new HolidayWithTravel();
 }