24,25c24,25
< fn printPowersOfTwo(numbers: [4]u16) ??? {
<     loop (numbers) |n| {
---
> fn printPowersOfTwo(numbers: [4]u16) void {
>     for (numbers) |n| {
34c34
< fn twoToThe(number: u16) ??? {
---
> fn twoToThe(number: u16) u16 {
38c38
<     loop (n < number) : (n += 1) {
---
>     while (n < number) : (n += 1) {
42c42
<     return ???;
---
>     return total;