Even/Odd If Statements

[Zampano]

Hey guys, I just started in Turing, and because I finished the class's assigned programming my teacher gave me a bonus question to solve which involves code I don't know about.
The assignment is to create a two-player game with alternating turns (the rest of the programming assignment is irrelevant) and I am not sure how I could reuse the game's code and still have alternating turns on that game.
My question eventually boils down to this:
How can I ask if a number is even in an if statement?
What I tried was:

tries:=tries+1

and later:

if tries=even then
put "Player two, go."

However, nothing I tried worked. Is there a simpler way? Thanks guys.

[neufelni]

You will need to use the mod command. It determines the remainder of a division. And since all even numbers have a remainder of 0 when divided by 2, it's as simple as this:

Turing:

if num mod 2 = 0 then     put "Even" else     put "Odd" end if

[Zampano]

I cannot thank you enough.
Lol, the class I had to do it in hadn't even finished and you responded so quickly.
Thanks.

[Tony]

Just no cheating, ok?

Another really cool way of alternating turns has to do with the property that -1 * -1 = 1. So instead of incrementing the step and figuring out the remainder each time, you just flip the sign.

Turing:

var turn : int := 1 loop    if turn > 0 then       put "Player 1"    else       put "Player 2"    end if    turn *= -1 end loop

[Bored]

Or along the same idea, you could use a boolean value and change it each time.

Turing:

var playerOne : boolean := true loop     if playerOne  then         put "Player 1"     else         put "Player 2"     end if     playerOne  := not playerOne %True becomes false or false becomes true end loop

[Zampano]

No cheating: goes without saying.
The assignment is not an inclass test, but rather the question was assigned in class, and I got a response before that same class ended, which meant I was able to make the whole program in one class.
Thanks again guys!