## displaylastparam

### Instructions

Write a program that displays its last argument, if there is one.

### Usage

```console
student@ubuntu:~/[[ROOT]]/test$ go build
student@ubuntu:~/[[ROOT]]/test$ ./test hello there
there
student@ubuntu:~/[[ROOT]]/test$ ./test "hello there" how are you
you
student@ubuntu:~/[[ROOT]]/test$ ./test "hello there"
hello there
student@ubuntu:~/[[ROOT]]/test$ ./test
student@ubuntu:~/[[ROOT]]/test$
```