Final update

subjects/doop.en.md

@@ -10,11 +10,11 @@ The program has to be used with three arguments:
 - An operator
 - Another value
 
-In case of an invalid entry the programs prints `0`.
+In case of an invalid operator the programs prints `0`.
 
 In case of an invalid number of arguments the program prints nothing.
 
-The program has to handle the modulo and division by 0 as shown on the output examples below. 
+The program has to handle the modulo and division operations by 0 as shown on the output examples below. 
 
 `fmt.Print` is authorized.
 
@@ -25,8 +25,8 @@ student@ubuntu:~/piscine/test$ go build doop.go
 student@ubuntu:~/piscine/test$ ./doop
 student@ubuntu:~/piscine/test$ ./doop 1 + 1
 2
-student@ubuntu:~/piscine/test$ ./doop hello + 1
+student@ubuntu:~/piscine/test$ ./doop hello + 1 | cat -e
-0
+0$
 student@ubuntu:~/piscine/test$ ./doop 1 p 1
 0
 student@ubuntu:~/piscine/test$ ./doop 1 + 1