Fortran compile issue

I was given this program to work with and it was supposed to be simple for someone like me who knows nothing of Fortran or Unix. It comes with a makefile, so all I have to do is use the make command, then type ./blub to execute the program. A list of data should then appear in the fort.51 file. The initial conditions can be modified in continue.f.

It sounds simple enough, but I can't get it to work - after executing the program, my shell disappears and the fort.51 file stays empty. Could anyone perhaps look at the program and see if I'm doing something wrong?

http://www.students.science.uu.nl/~3418138/ZC.tar

Do not post classroom or homework problems in the main forums. Homework and coursework questions can only be posted in this forum under special homework rules.

Please review the rules, which you agreed to when you registered, if you have not already done so.

More-than-likely, posting homework in the main forums has resulting in a forum infraction. If you did not post homework, please explain the company you work for and the nature of the problem you are working on.

If you did post homework in the main forums, please review the guidelines for posting homework and repost.

Thank You.

The UNIX and Linux Forums.