getting_accounts.rs

// don't forget to import!
use solana_program::{
	account_info::{AccountInfo, next_account_info}
};
// code inside of `process_instruction`
let accounts_iter = &mut accounts.iter(); // accounts here refers to the argument denoting the array of `AccountInfo`s
let account_one = next_account_info(accounts_iter)?;
let account_two = next_account_info(accounts_iter)?;
let account_three = next_account_info(accounts_iter)?;
...