[Shenren_CN]

Hi,

I'm new to writing CFD code in Fortran. I saw two different styles in writing code in Fortran lately and have been wondering what's the pros and cons of both.

One of them uses global variables substantially, and when a subroutine is called, there's normally no parameters pass; the other uses local variables, and every time a subroutine is called, a long list of parameters are passed, which is giving me trouble in easily keeping track of the variables being passed and used.

Intuitively, I think the 1st approach is better, apparently more readable. I wonder what's your opinion on this, and any suggestion on which style I should adopt when I write my code.

Cheers,
SX