When to use zero articles
Here's a website you should find useful:
BBC World Service | Learning English | Grammar Challenge
Rover
I checked the link, and to my suprise, I found this;
--------------------------------------------------
4. In exclamations with what + uncountable noun:
What beautiful weather!
What loud music!
What disgusting food!
--------------------------------------------------
I always use them with indefinite articles. So, I'm a bit confused now.
Would anyone shed more light on it?
The examples you have quoted are perfect. We would not say "What a beautiful weather". Weather is a mass uncountable noun and takes no article with exclamations. In fact, it only ever takes the definite article or the zero article.
The same goes for music. "What loud music!" - perfect. "The music is very loud" - perfect. "A music is loud" - totally incorrect.
And the same for food.