Illegal Arithmetic Operations?

[Cruor]

Hello,

I am currently teaching myself Java, and there is a question asking me in my book which of the following expressions are illegal:

2.3 * 1.2
5.67 - 2
25.0 / 5.0
7.0 % 3.0
8 % 2.0

But after re-reading everything, writing a program containing the expressions, and searching the internet, I have seen nothing wrong with these expressions.

Could someone point out something I am missing?

Thanks for your time.

[fishtoprecords]

fire up your editor, enter them, and see what the compiler says.

[Cruor]

I already have, I guess this means they are all right?

[Supamagier]

None of them is illegal

[Eranga]

Hello,

I am currently teaching myself Java, and there is a question asking me in my book which of the following expressions are illegal:

2.3 * 1.2
5.67 - 2
25.0 / 5.0
7.0 % 3.0
8 % 2.0

But after re-reading everything, writing a program containing the expressions, and searching the internet, I have seen nothing wrong with these expressions.

Could someone point out something I am missing?

Thanks for your time.

All are correct. Who told you that it's illegal? You said that on the editor everything are fine. So...

[Cruor]

The book said "State wether illegal or legal"

So I guess it might have been a trick question.

Thanks for the responses, I will be here to stay on the forums :D

[fishtoprecords]

a more useful question is: do you get the expected answer.
Put some calls to System.out.println() in your code and see. I bet some will surprise you.

[Eranga]

I bet some will surprise you.

Yes it is. But they are not illegal anyway. ;)

[Eranga]

The book said "State wether illegal or legal"

So I guess it might have been a trick question.

Thanks for the responses, I will be here to stay on the forums :D

Simply user println() and see the output. Then decide it's legal or illegal.

[tOpach]

I think all of them are corret and my opinion is that dont spend too much time on those definitions.Good luck:D

[Eranga]

That is not a good opinion I think. Discovering new things make difference always.

[tOpach]

"That is not a good opinion I think. Discovering new things make difference always. "

Yeah, you are right, discovering new things make difference always. And the only thing that we can not bring back is TIME.So, make things faster.


tOpach,

Kind regards.

[Eranga]

True, but what happen he/she is a newbie for such things. ;)

[tOpach]

Come on Eranga we all got that he/she is beginner.All I wish to show the way of learing java.That s all

tOpach,

Kind regards.