public/subjects/cleanstr.en.md

cleanstr

Instructions

Write a program that takes a string, and displays this string with exactly:

• one space between words.
• without spaces nor tabs at the beginning nor at the end.
• with the result followed by a newline ("\n").

A "word" is defined as a part of a string delimited either by spaces/tabs, or by the start/end of the string.

If the number of arguments is not 1, or if there are no words to display, the program displays a newline ("\n").

Usage :

student@ubuntu:~/[[ROOT]]/cleanstr$ go build
student@ubuntu:~/[[ROOT]]/cleanstr$ ./cleanstr "you see it's easy to display the same thing" | cat -e
you see it's easy to display the same thing$
student@ubuntu:~/[[ROOT]]/cleanstr$ ./cleanstr " only    it's  harder   "
only it's harder$
student@ubuntu:~/[[ROOT]]/cleanstr$ ./cleanstr " how funny" "Did you   hear Mathilde ?"
$
student@ubuntu:~/[[ROOT]]/cleanstr$ ./cleanstr "" | cat -e
$
student@ubuntu:~/[[ROOT]]/cleanstr$