Pascal Procedure

Hey guys, learning pascal here. I'm new to this programming thing and i've got a problem that's been bugging me.

I've gotta write a procedure called print_words which receives a string as a parameter, and print all the words contained in the that string. Consider all the characters other than space as components of a word. So if i type:

This is a test 12$%ab

the program must return me:

This
is
a
test
12$%ab

Would anyone help me?

Been to /g/
Like i said, i'm pretty new to this and I've got the worst teacher money can buy. I'm broke as fuck, unemployed and I'm trying my best here to learn this thing.

If this is so easy for you could you kindly give me some help?