this post was submitted on 09 Mar 2025
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Why can't I use the '|' bitwise operator in this statement? (lemm.ee)
submitted 1 day ago* (last edited 1 day ago) by [email protected] to c/[email protected]
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if coin == 25 | 10 | 5:

If I replace the '|' with 'or' the code runs just fine. I'm not sure why I can't use '|' in the same statement.

Doing the following doesn't work either:

if coin == 25 | coin == 10 | coin == 5:

I know bitwise operators can only be used with integers, but other then that is there another difference from logical operators?

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[โ€“] [email protected] 5 points 1 day ago* (last edited 1 day ago) (1 children) 
0d10 = 0b00001010
0d04 = 0b00000100

1010   |
0100
------
1110

0b00001110 = 0d14


0d25 = 0b00011001
0d10 = 0b00001010

11001   |
01010
-------
11011

0b00011011 = 0d27

If an int is only x bytes long, but y bytes are needed for an action, it's just padded with 0's to the left. So 0b110 = 0b0110 = 0b00000110. Usually you will use either 8, 16, 32 or 64 digits/bits (char, short, int and long respectively, and 1, 2, 4 and 8 bytes long, 1 byte = 8 bits. So you'll usually align it with bytes.) However, for calculating like this removing trailing zeroes can make it more tidy, and sometimes 4 or 2 bits are used too. And bools technically only use 1 bit.

[โ€“] [email protected] 2 points 1 day ago

Thank you. Not sure why in the link the arithmetic in green results in 7.