How do you write this in c language?

In the language of an alien race, all words take the form of Blurbs. A Blurb is a Whoozit

followed by between zero or more Whatzits. A Whoozit is the character $\text{'}$x$\text{'}$ followed by

between one or more $\text{'}$y$\text{'}$s$.$ A Whatzit is a $\text{'}$q$\text{'}$ followed by either a $\text{'}$z$\text{'}$ or a $\text{'}$d$\text{'},$ followed by a

Whoozit.

You need to design and implement two programs, one in a non$-$declarative language $($C

or C$++)$ and the other in a declarative language $($Scheme or Prolog$).$ Both the programs

should have the following features:

$1.(15$ points$)$ The program should ask the user to $$Enter an alien word:$,$ read the input

as a string, and check whether or not it is a valid word $($Blurb$).$ If it is valid, it prints

"The word is fine.", otherwise it prints "The word is a mess!".

$2.(5$ points$)$ The program should loop and ask the user for new input until they enter a

valid blurb.