I need some help for running f90 files.

Hi, I just started to study fortran language.

And I have some problem. F90 files which my prof give me doesn't work.

There are two f90 files. and i think one of them is main file and the other is source file

But these doesn't work.

How can i make these file run?

pls give me some advise..

p.s I'm using visual studio 2012 and i attach my files.