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  1. abstract class IFoo
  2. {
  3.   public abstract IFoo foo(IFoo a);
  4. }
  5.  
  6. class IFoo_int : IFoo {
  7.   private int content = 0;
  8.   public IFoo_int(int content) {
  9.     this.content = content;
  10.   }
  11.  
  12.   public override IFoo foo(IFoo a)
  13.   {
  14.       return this;
  15.   }
  16. }
  17. class MainClass
  18. {
  19.     static void Main(string[] args)
  20.     {}
  21. }
Success #stdin #stdout 0s 33480KB
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https://ideone.com/s3FhtG
language:
C# (gmcs 5.20.1)
created:
11 years ago
visibility:
public

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