boolean operators

hi there, i'm brandy new to C programming.
I'm having trouble understanding the boolean operators, i can solve most of them, but some don't quite make sense to me.
does anyone have a reference guide or link that can go into greater detail than the tutorials, available on the site? i've looked in other places but it's not quite what im looking for. i emphasize the fact that i'm brand spankin' new to this.
thanks!
emily

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Originally Posted by forkpie hat

hi there, i'm brandy new to C programming.

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So why are you posting in the C++ forum?

Quote:

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I'm having trouble understanding the boolean operators, i can solve most of them, but some don't quite make sense to me.

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If you give an example of what you don't understand, then we may be better able to help.

One of the common misconceptions is the use of and/or in human language. We can say "Let's go for some tea and coffee...", which doesn't mean "I'd like to have a cup with tea and coffee in the same cup at the same time" or "I'd like a cup of coffee and then a cup of tea". We also use OR in similarly sloppy conventions.

In computers, X AND Y means "for this to be true, both X and Y must be true", and X OR Y means "true if either or both of X and Y is true".

Not means "the opposite", so if something is true, it's NOT false. Something NOT false is true.

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Mats

thank you. i forgot to put ++, i was on my way out the door when i typed it. my bad.

You might find it useful that some boolean operators interact like arithmetic ones.

Code:

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(A || B) && (C || D)  if and only if  (A && C) || (A && D) || (B && C) || (B && D)
Just like how
(A+B) * (C+D) = (A*C) + (A*D) + (B*C) + (B*D)

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and

Code:

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(A && B) || (B && C)  if and only if  B && (A || C)
Like
(A*B) + (B*C) = B * (A+C)

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