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## firstruneprog
### Instructions
Écrire un programme qui reçoit une `string` et qui retourne la première `rune` de cette `string`.
### Utilisation :
```console
student@ubuntu:~/[[ROOT]]/firstruneprog$ go build
student@ubuntu:~/[[ROOT]]/firstruneprog$ ./firstruneprog "this is not happening"
t
student@ubuntu:~/[[ROOT]]/firstruneprog$ ./firstruneprog "hello" | cat-e
h$
student@ubuntu:~/[[ROOT]]/firstruneprog$ ./firstruneprog "this" "is" "not" "happening"
student@ubuntu:~/[[ROOT]]/firstruneprog$
student@ubuntu:~/[[ROOT]]/firstruneprog$ ./firstruneprog
student@ubuntu:~/[[ROOT]]/firstruneprog$
```