import kernel
class A
- init inita do
+ init do
'A'.output
' '.output
end
- meth work do '\n'.output
+ init inita do init
+ fun work do '\n'.output
end
class B
-special A
- init initb do
+ super A
+ init do
'B'.output
'1'.output
' '.output
'2'.output
' '.output
end
+ init initb do init
end
class C
-special A
- init initc do
+ super A
+ init do
'C'.output
'1'.output
' '.output
'2'.output
' '.output
end
+ init initc do init
end
class D
-special B
-special C
- init initd do
+ super B
+ super C
+ init do
'D'.output
'0'.output
' '.output
end
end
-#alt0#(new A.inita).work
-#alt0#(new B.initb).work
-#alt0#(new C.initc).work
-(new D.initd).work
+#alt0#(new A).work
+#alt0#(new B).work
+#alt0#(new C).work
+(new D).work
#alt0#(new D.inite).work