## expandstr
### Instructions
Refactor & Beautify & destruction commit
return early, remove else branches, reorder conditions and top-level functions, remove empty lines, remove unnecessary append(), fix typos, stop using testing package, remove dead code, fix mistakes in subjects, tests and solutions, remove disclaimers, reformat comments, simplify solutions, tests, add more instructions to subjects, remove obsolete files, etc.
Some of the reasons behind those modifications will be added to good-practices.en.md
Some of the exercises are now broken, they will have to be fixed, most of them have a "TODO:" comment.
4 years ago
Write a program that takes a `string` and displays it with exactly three spaces between each word, with no spaces or tabs at either the beginning nor the end.
The `string` will be followed by a newline (`'\n'`).
A word is a sequence of alphanumerical characters.
If the number of arguments is not 1, or if there are no word, the program displays nothing.
### Usage
```console
student@ubuntu:~/expandstr$ go build
student@ubuntu:~/expandstr$ ./expandstr "you see it's easy to display the same thing" | cat -e
you see it's easy to display the same thing$
student@ubuntu:~/expandstr$ ./expandstr " only it's harder " | cat -e
only it's harder$
student@ubuntu:~/expandstr$ ./expandstr " how funny it is" "did you hear, Mathilde ?" | cat -e
student@ubuntu:~/expandstr$ ./expandstr
student@ubuntu:~/expandstr$
```
