- The function main declared needs to **also pass** the `Restrictions Checker`(illegal functions tester). It is advised for the student to just empty the function main after its own testings are done.
- Every other rules are obviously the same than for a `program`.
- Write a function that simulates the behaviour of the `Itoa` function in Go. `Itoa` transforms a number represented as an `int` in a number represented as a `string`.