Help I'm Hopelessss

I'm sorry I can't reply for some reason so if u feel u need to replace this go ahead.


I'm messing around with the NOT !.
At the first place I did like this !(1 || 0) and that suppose to be true I guess, but it doesn't recognize the '!'. Then I did a thread here and some guy told me it suppose to be (!true) but that didn't work either so what SHOULD I DO?!?!?!? pls help


HELPPPPP pls:rolleyes:

oh and if it is (!true) so how do I make it like first evaluate (1 || 0) then evaluate NOT. (1 || 0) = true but NOT makes it false.

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!(1 || 0) and that suppose to be true I guess

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No, it's not.

What do you mean by "not recognize"? You get a compile error?

(1 || 0) evaluates to true. !(1 || 0) evaluates to false.

if you do this:

Code:

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if !(1 || 0)

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you will get a compile error. Do this:

Code:

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if (!(1 || 0))

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WOOWW thanks it's really (!(1/0)) and recognize = identify

oh 1 last question: how do I make && evaluate after ||? means: if I do (1 || 1 && 0) that's not like 1 || 1 = 1 && 0 = 0

it's 1 && 0 = 1 then 1 || 1 = 1
I want AND to be evaluate before OR, how do I do that?

= is assignment, == is comparison for equality.
To change the order in which subexpressions are evaluated, use () just like you do in math expressions.

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Originally Posted by mat13mat

WOOWW thanks it's really (!(1/0)) and recognize = identify

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if something
Is illegal.
if (something)
Is legal.

Therefore, the error was that you did not write the if properly.

Here's an example of your second q:
if ( 1 || (1 && 0) )

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Here's an example of your second q:
if ( 1 || (1 && 0) )

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which is equivalent to
if ( 1 || 1 && 0 )

I think I've an idea now how it was supposed to be. If && is to be first, then place it first:
if ( (1 && 0) || 1 )
Parenthesises make the expression less ambiguous, so I'd definitely recommend them, even if they are not required.

mat13mat: You say you want to evaluate && after ||, but then you proceed to give examples of the opposite.

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If && is to be first, then place it first:

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That may help readability, but has zero effect on actual semantics. && always comes first because it has a higher precedence than ||. If you want to change this, you have to add extra parentheses around the OR expression.

I don't know if some1 will answer this here so I'll post a thread too, gm do w/e u want.
If I make 2 files in 1 project, and I execute it, but I want to execute only 1 file how do I do it?
I made a project with 2 files in it, 1 is int main() and 1 is int submain() now how do I execute the submain file? only int main() executes and I get to errors pls help.

Functions needs to be called.
Int main gets called upon program startup. Any other function you must call manually. There are not special.

What C++ book are you using that doesn't cover this?