loop.cairo

%builtins output

from starkware.cairo.common.serialize import serialize_word
from starkware.cairo.common.alloc import alloc

func print_words{output_ptr : felt*}(res_len : felt, res : felt*):
    if res_len == 0:
        return ()
    end

    serialize_word([res])
    print_words(res_len - 1, res + 1)
    return ()
end

func main{output_ptr : felt*}():
    alloc_locals
    let (local arr) = alloc()

    const loop_size = 5
    const loop_space = 4
    [ap] = loop_size; ap++

    loop:
    # do stuff here
    assert arr[loop_size - [ap - 1]] = 1

    # loop
    [ap] = [ap - 1 - loop_space] - 1; ap++
    jmp loop if [ap - 1] != 0

    print_words(loop_size, arr)

    return ()
end