i'm building a bank management system and cant seem to figure out how to make it possible for users

[zenith galleon]

i'm building a bank management system and cant seem to figure out how to make it possible for users to deposit money to their accounts. I basically have one file that holds all of my accounts (database.dat) which has all the values associated with each account stored in an array of structs (key, account number, name, and account balance) . what i've been trying to do is read from that file, look for a match between the key pin provided by the user and the account.key (struct value) and if they match, rewrite that specific struct with an updated account balance to a temp file as well as all other account structs, then rewrite all of them back to the main file with the updated account and account balance. Does this logic make sense?

[upper rune]

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[weary orchid]

My concern is actually with the atomicity of transactions (read -> update -> write)

Also the RCU

https://en.wikipedia.org/wiki/Read-copy-update

Anyways, the question is not C-specific 😁

[upper rune]

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