HOW TO use Fortran on Athena
To use Fortran on Athena, you should do the following:
- Create a file containing your Fortran source code using a text editor such
as Emacs. The file should have a name that ends with a '.f' suffix. The
compiler assumes that files ending in '.f' are Fortran source files.
- Compile the source code using the Fortran-77 compiler, 'f77'. For example,
if you want to compile a source file named 'program.f', type this:
f77 program.f
If your file compiles successfully, the executable file will be named
'a.out'.
- To run the executable file, just type its name:
a.out
- If you need to debug run-time errors, you may want to use the 'dbx'
source-level debugger. If you want to learn about the 'dbx', you can read
the manual page by using the 'man' command:
man dbx
For more detailed explanations and examples, you may want to look at
"Essential Fortran," available in CopyTech.
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