About Question enthuware.ocajp.i.v8.2.1059 :

[Denyo1986]

I think the way the question was written is a little ambiguous.
What is a "valid" for loop? One that compiles? Or one that does not loop infinitely?

I read it the way that it will compile, in which case option 4 would be true.

[admin]

The problem statement has now been updated to:
"Which of the following code fragments compile without any error?"

thank you for your feedback!

[Denyo1986]

I find it great how quickly you guys react and adapt. Good work. Thanks.