24 lines
209 B
C#
24 lines
209 B
C#
using System;
|
|
|
|
struct S
|
|
{
|
|
public static int Main ()
|
|
{
|
|
S? s = null;
|
|
A a = s;
|
|
B b = (B) s;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
class A
|
|
{
|
|
public static implicit operator A (S x)
|
|
{
|
|
return new B ();
|
|
}
|
|
}
|
|
|
|
class B : A
|
|
{
|
|
} |