This is a crazy mix of C# and Java code but actually it's neither of them.

• In Java you print with System.out.println(); or (if you want to use C-like formatters) System.out.printf();.
• In C# you print with Console.WriteLine(); (make sure to using System;). This method supports message format {0} but no C-like printf format %s

Note also that in Java you cannot define methods with a lambda syntax.

my bad, i couldn't do it

I would add random tests.

Right!!

using library takes all the fun and difficulty out of challenges

arrow

but does it stop being a function?
since it uses "const" and not "function"

that it

cool, you thought of all kinds of returns, but then you overload your function when it could only do one thing, the only thing it needs to do is turn positive into negative, positive is all those above 0, so num > 0 return "some way to pass it negative", the rest can be returned the number itself, so just put a return num