## Primitive

### Instructions

Create a constant variable for each primitives:
- `str` for `String`
- `num` for `Number`
- `bool` for `Boolean`
- `undef` for `undefined`


### Notions

- https://nan-academy.github.io/js-training/examples/primitive-and-operators.js
- https://nan-academy.github.io/js-training/examples/variables.js