## nbrconvertalpha
### 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.
5 years ago
Write a **program** that prints the corresponding letter in the `n` position of the latin alphabet, where `n` is each argument received.
For example `1` matches `a` , `2` matches `b` , etc. If `n` does not match a valid position of the alphabet or if the argument is not an integer, the **program** should print a space (" ").
A flag `--upper` should be implemented. When used, the program prints the result in upper case. The flag will always be the first argument.
### Usage
```console
$ go run .
$ go run . 8 5 12 12 15 | cat -e
hello$
$ go run . 12 5 7 5 14 56 4 1 18 25 | cat -e
legen dary$
$ go run . 32 86 h | cat -e
$
$ go run . --upper 8 5 25
HEY$
$
```
