## swap-args

### Instructions

Write a program that takes two arguments and swaps them.
- If the number of arguments is different from 2, print (`'\n'`).
- The arguments must be separated by a withe space.
- Print (`'\n'`) at the end of the program.

### Usage

```console
$ go run . | cat -e
$
$ go run . 1 2 | cat -e
2 1$
$ go run . "World" "Hello" | cat -e
Hello World$
```