lssa/nssa/test_program_methods/guest/src/bin/extra_output.rs

use nssa_core::{
    account::Account,
    program::{AccountPostState, ProgramInput, read_nssa_inputs, write_nssa_outputs},
};

type Instruction = ();

fn main() {
    let (ProgramInput { pre_states, .. }, instruction_words) = read_nssa_inputs::<Instruction>();

    let [pre] = match pre_states.try_into() {
        Ok(array) => array,
        Err(_) => return,
    };

    let account_pre = pre.account.clone();

    write_nssa_outputs(
        instruction_words,
        vec![pre],
        vec![
            AccountPostState::new(account_pre),
            AccountPostState::new(Account::default()),
        ],
    );
}