Having Trouble with boolean

Hey guys

i've just started learning C++ and im stuck with boolean

in the tutorial it shows:

Code:

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A. !( 1 || 0 )        ANSWER: 0       
B. !( 1 || 1 && 0 )    ANSWER: 0 (AND is evaluated before OR)
C. !( ( 1 || 0 ) && 0 )  ANSWER: 1 (Parenthesis are useful)

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When i put one of these in Dev-C++ tells me: expected unqualified-id before '!' token

if someone could tell me what i am doing wrong it would be great.

Thanks

P.S sorry huys, i accidently posted this twice
My apologies

What did you try? This works for me:

Code:

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#include <iostream>

int main()
{
    std::cout << !( 1 || 0 ) << std::endl;
}

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Now that i look at it, i havent actually gotten as far as std::cout << !( 1 || 0 ) << std::endl;
so i don't exactly know what it is im doing.

is there any other way to do it?

Sure,
bool b = !( 1 || 0 );

You must assign the expression somewhere, though.

Quote:

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is there any other way to do it?

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Eh, your idea is to evaluate the expression and print out the result to see for yourself, right? Then it is as simple as that. What else did you have in mind?

Post your code that isn't working...

Emm I just started learning C++, and programming in general, but anyways hello nice to meet you all.

Anyways, I happen to get the same problem as the TS, I think what he's trying to say is how to apply the boolean operator in an IF statement.

Well, at least thats where my problem is.

I tried:

Code:

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if(age > 20 &#37;% age < 25)

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To make if the input is more than 20 and less than 25 but its still doesn't work.

edit:
LOL sorry to bother you it's supposed to be &&, the font makes it hard to see the difference >_< and I never look at what I press so...Anyways I found the problem >_>