Regular expression to match maximium of five words

Question

I have a regular expression

^[a-zA-Z+#-.0-9]{1,5}$

which validates that the word contains alpha-numeric characters and few special characters and length should not be more than 5 characters.

How do I make this regular expression to accept a maximum of five words matching the above regular expression.

Answer 1

^[a-zA-Z+#\-.0-9]{1,5}(\s[a-zA-Z+#\-.0-9]{1,5}){0,4}$

Also, you could use for example [ ] instead of \s if you just want to accept space, not tab and newline. And you could write [ ]+ (or \s+) for any number of spaces (or whitespaces), not just one.

Edit: Removed the invalid solution and fixed the bug mentioned by unicornaddict.