reverse bits in exam

subjects/reversebits.en.md

@@ -2,26 +2,20 @@
 
 ### Instructions
 
-Write a function that takes a `byte`, that reverses it `bit` by `bit` (like the
-example) and that returns the result.
+Write a program that takes a `byte` in binary format and that reverses it `bit` by `bit` (like the
+example)
 
-### Expected function
+### Expected output
 
-```go
-func ReverseBits(octet byte) byte {
-
-}
-```
-
-Example:
-
-1 byte
-
----
-
-```
-00100110
-   ||
-   \/
+```console
+student@ubuntu:~/piscine-go/reversebits$ go build
+student@ubuntu:~/piscine-go/reversebits$ ./reversebits
+Not enough arguments.
+student@ubuntu:~/piscine-go/reversebits$ ./reversebits 00100110
 01100100
+student@ubuntu:~/piscine-go/reversebits$ ./reversebits "djs"
+The argument "djs" doesn't represent a byte
+student@ubuntu:~/piscine-go/reversebits$ ./reversebits "0102039s"
+The argument "0102039s" doesn't represent a byte
+student@ubuntu:~/piscine-go/reversebits$
 ```