public/subjects/displayz.en.md

## displayz

### Instructions

Write a program that takes a `string`, and displays the first `z` character it
encounters in it, followed by a newline(`'\n'`). If there are no `z` characters in the
string, the program just writes `z` followed by a newline(`'\n'`). If the number of parameters is not
1, the program displays an `z` followed by a newline(`'\n'`).

### Usage

```console
student@ubuntu:~/piscine-go/test$ go build
student@ubuntu:~/piscine-go/test$ ./test "xyz"
z
student@ubuntu:~/piscine-go/test$ ./test "bcvbvZ"
z
student@ubuntu:~/piscine-go/test$ ./test "nbv"
z
student@ubuntu:~/piscine-go/test$ ./test
```