[Help-glpk] lpx load matrix(lp,ne,ia,ja,ar)

[Michael Jastrzebski]

My ar[] array has many zero elements. I hope it is allowed. I am a bit confused 
on the subject since the second argument (ne) apparently represents (doc. page 
21) the number of non-zero elements. Can anyone enlighten me what's going on? 
If 
zero elements are not allowed then I see no way how I could apply this package 
to my problem since my equations can only be written one way. Or should I cheat 
and instead of using "0.0" use (say) "0.0000001" which is non-zero?

Cheers.

Michael J.