this post was submitted on 25 Mar 2024

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You can certainly change it. But should you? (lemmy.ml)

submitted 8 months ago by [email protected] to c/programmer_humor

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[–] [email protected] 12 points 8 months ago* (last edited 8 months ago) (1 children)

Context is very interesting: https://stackoverflow.com/questions/4592762/difference-between-const-const-volatile

Const flags to the code that you cannot change the value, and volatile flags to the compiler that it's not safe to change the value.

[–] [email protected] 4 points 8 months ago

Volatile means that the value should be read each time its accessed. It can't be cached in a register or the read be otherwise assumed and optimized away or the instructions around its access be reordered.