If Statement && Help

[Tesujin]

I need help with something, probably simple...

I want to have an "If (something AND something) then....."
but when I try using && I get errors...

Here's what I tried (basically)

if (GetAsyncKeyState(VK_F8) && x > 1) {
     action... }

Thanks for any help.

[Skizmo]

My crystalball broke down last week... ordered a new one, but I'm still waiting for it. So, while I'm waiting for my new crystalball, maybe you could tell us which errors you get, because right now, I can't read your mind.

[Tesujin]

My crystalball broke down last week... ordered a new one, but I'm still waiting for it. So, while I'm waiting for my new crystalball, maybe you could tell us which errors you get, because right now, I can't read your mind.

Lol, well I figured that someone would be able to give an example of what the if statement would look like...

I'm getting errors for different things because of how I wrote the code out, kind'a badly, but either way, could you give a small example of using an if statement with the "&&" and I can use that to make my own. I don't want someone to do it for me, like tell me what code I need, I'm trying to learn how to do everything by myself so I wont need a lot of help in the future...

Thanks.

[KingTermite]

if (GetAsyncKeyState(VK_F8) && x > 1)

is this supposed to be:

if ( (GetAsyncKeyState(VK_F8) && x ) > 1)

or

if (GetAsyncKeyState(VK_F8) && (x > 1) )

Compiler probably doesn't know? You have two evaluations there.

[Tesujin]

is this supposed to be:

if ( (GetAsyncKeyState(VK_F8) && x ) > 1)

or

if (GetAsyncKeyState(VK_F8) && (x > 1) )

Compiler probably doesn't know? You have two evaluations there.

Thanks to you, I got it... I needed an extra pair of () around it...

Here's what worked.
[code]if ((GetAsyncKeyState(VK_F8)) && z > 1)]/code]

Thanks for helping.

[GCDEF]

Other than you changed x to z, there's no reason adding the extra parenthesis would have any effect on compilation or execution. They're superfluous in that case. Something else changed as well.

[Tesujin]

Other than you changed x to z, there's no reason adding the extra parenthesis would have any effect on compilation or execution. They're superfluous in that case. Something else changed as well.

Idk, I'm using Visual C++ Express 2008 and that's all I had to change for it to work. And I just copied and pasted that time, because the variable in there was z, I just used x when I typed it here. Anyways, I don't know why if that ain't the reason, but I did it in 10 different spots, and having the extra () around it got rid of all the errors.

[KingTermite]

Other than you changed x to z, there's no reason adding the extra parenthesis would have any effect on compilation or execution. They're superfluous in that case. Something else changed as well.

I agree. I don't understand why they would have made a difference where you put them.

[Tesujin]

I agree. I don't understand why they would have made a difference where you put them.

Maybe it's because I have so many if's inside one another? Not sure, but it says I don't have an if for an else if I don't have the extra (). Either way, as long as it works lol.

[KingTermite]

Either way, as long as it works lol.

Not knowing "why" it works is almost as bad as it not working, IMO.

[Tesujin]

Not knowing "why" it works is almost as bad as it not working, IMO.

Yeah but it seems like it makes sense to me... i mean..

((getkey(vkf8)) && (z > 1))

1. beginning of whole thing
2. beginning of getasynckey
3. beginning of key
4. close key
5. close getasynckey
6. open z>1
7. close z>1
8. close whole thing

thats what it seemed like to me... sorry if im wrong..

[VladimirF]

Maybe it's because I have so many if's inside one another? Not sure, but it says I don't have an if for an else if I don't have the extra (). Either way, as long as it works lol.

May be while you were adding those unneeded parenthesis, you accidentally fixed some mismatched ones?

[Tesujin]

May be while you were adding those unneeded parenthesis, you accidentally fixed some mismatched ones?

But if that was the case, I would have gotten errors before adding the extra &&'s to the if statement. Also, I added opening and closing parenthesis, so wouldn't the unmatched ones still be there?

[GCDEF]

But if that was the case, I would have gotten errors before adding the extra &&'s to the if statement. Also, I added opening and closing parenthesis, so wouldn't the unmatched ones still be there?

I know you think that fixed it, but it didn't. Those extra parenthesis don't do anything in this case. There was something else.

[jeron]

This statement in post #11

((getkey(vkf8)) && (z > 1))

is not the same as this one in post #5

if((GetAsyncKeyState(VK_F8)) && z > 1)

I'm guessing you went with the former?