PERL counting words that are missing a vowel

Write a program called no_vowels.pl that will count
how many words DO NOT have an 'a' or an 'A',
how many DO NOT have an 'e' or an 'E',
how many DO NOT have an 'i' or an
'I', and so on.

The output should look like the below. 
Note that the letters must be listed in decreasing order of frequency

14000 words do not have an 'u'
11258 words do not have an 'o'
10123 words do not have an 'i'
11523 words do not have an 'a'
10111 words do not have an 'e'

>>62
Then why is it used for any good low-level application?  Why are there so many languages based directly on C?