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+---- Thread: [Help] Boolean operators in C (/showthread.php?tid=6306822)
Boolean operators in C - schassis - Aug 27, 2025
i do not understand them in the slightest
Code
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)ill start with A, i read it as "not or 1 or 0 so it must equal 0" like how in the fuck does that work?!
i dont understand "!" either; if true: false, if false: true. like what the hell??? why???
RE: Boolean operators in C - webdev77 - Aug 27, 2025
It's the order of operations you aren't seeing or apparently following. Just like in normal math, C also has order of operations.
https://en.cppreference.com/w/c/language/operator_precedence.html
1a. 1 or 0 results in 1
1b. Not 1 results in 0
2a. 1 and 0 results in 0.
2b. 1 or 0 results in 1
2c. Not 1 results in 0
3a. 1 or 0 results in 1
3b. 1 and 0 results in 0
3c. Not 0 results in 1
RE: Boolean operators in C - schassis - Aug 27, 2025
(Aug 27, 2025 03:13 PM)webdev77 Wrote: It's the order of operations you aren't seeing or apparently following. Just like in normal math, C also has order of operations.
https://en.cppreference.com/w/c/language/operator_precedence.html
1a. 1 or 0 results in 1
1b. Not 1 results in 0
2a. 1 and 0 results in 0.
2b. 1 or 0 results in 1
2c. Not 1 results in 0
3a. 1 or 0 results in 1
3b. 1 and 0 results in 0
3c. Not 0 results in 1
oh my god i get it now! haha!
the order of operations is what i didnt know existed, thank you dude
i hate being slow tho, like i can feel my slowness - its aggravating
RE: Boolean operators in C - webdev77 - Aug 27, 2025
(Aug 27, 2025 03:49 PM)schassis Wrote: oh my god i get it now! haha!
the order of operations is what i didnt know existed, thank you dude
i hate being slow tho, like i can feel my slowness - its aggravating
You're very much welcome. Keep at it and you'll be building fun stuff in no time.
Here's a freely available hex dump function that'll help you when you play around with strings and any buffers containing non-printable characters. I don't know if you have covered strings and buffers in C yet but you likely will soon if you haven't yet.
Function (Click to View)